Expansion device for prostate surgery

Abstract

The invention relates to an expansion device for prostate surgery. The expansion device comprises at least one first distraction unit, a first mounting unit, a first holding unit, at least one pressing unit, a second mounting unit, a second holding unit and a first locking unit. The device has the advantages that the relative positions of the first holding unit and the second holding unit are locked through the first locking unit, so that the first holding unit and the second holding unit get close to open the first opening unit and the pressing unit, and the first ends of the first opening unit and the pressing unit are both arranged to be arc-shaped; the pressing unit is arranged to be of a structure longer than the first distraction unit and is specially used for the prostate surgery, so that during the surgery, the first distraction unit can be utilized to safely support the abdominal wall of a patient, the arc-shaped structure of the pressing unit is utilized to press the prostate tissue, and a clear working space is created in the abdominal cavity; and an operation channel is provided through the second holding unit, CO2 does not need to be charged to establish pneumoperitoneum, the expansion operation is simple, and great convenience is provided for prostate operation.

Description

Technical Field

[0001] This invention relates to the field of urological surgical instruments, and more particularly to an expansion device for prostate surgery, used in extraperitoneal prostate hyperplasia or prostate cancer surgery. Background Technology

[0002] Prostatectomy is a surgical procedure used to treat localized or locally advanced prostate cancer. The goal is to achieve a cure by completely removing the prostate and surrounding tissues (including the seminal vesicles and some lymph nodes). It includes open radical prostatectomy and laparoscopic radical prostatectomy. In open surgery, the surgeon enters the body through a large incision in the lower abdomen to directly remove the prostate and related tissues. To reduce patient trauma and improve postoperative recovery, laparoscopic radical prostatectomy is often used in China. This involves several small incisions, using a laparoscope and surgical instruments, resulting in less trauma and faster recovery. Additionally, some cases of severe benign prostatic hyperplasia are also treated with simple prostatectomy under laparoscopic assistance.

[0003] Because the abdominal wall and bladder are closely attached within the abdominal cavity, direct manipulation within this space would result in a very narrow field of vision and could easily damage surrounding tissues. Therefore, during surgery, it is necessary to separate the abdominal wall from the bladder by dilation. Current techniques primarily involve establishing pneumoperitoneum by introducing CO2 into the patient's abdomen or extraperitoneum. This creates a working space in front of or within the abdominal cavity, and the injection of CO2 gas pushes the organs cephalad (upward), thus separating the abdominal wall (abdomen) from the bladder and prostate below, providing ample operating space and a clear field of vision for instruments.

[0004] Although CO2 has low toxicity, it is readily absorbed by the body, posing a risk of poisoning. Secondly, establishing pneumoperitoneum with CO2 requires a staged inflation and deflation using an external pressure pump, which is cumbersome, prolongs surgical time, and incurs high costs for related constant pressure devices. Furthermore, current technology lacks dedicated cavity dilators for prostate surgery, leading to the frequent use of other dilators, which are inconvenient and fail to meet dilation requirements. Additionally, since radical prostatectomy requires removal of the prostate, the dissected prostate tissue can obstruct the surgeon's view, affecting the speed and precision of the cutting. Existing dilators cannot provide optimal surgical visibility by pressing and pulling on the dissected prostate tissue, severely limiting their use in prostate surgery. Moreover, the confined surgical space makes multiple participants difficult to operate in, while single-person operation is challenging. Meanwhile, most existing expansion devices are single-use and of a single specification. Their size cannot be adaptively adjusted according to the patient's surgical condition. That is, the contact area between the expander and the tissue cannot be adaptively adjusted, resulting in expansion space that is too large or too small. This does not conform to the concept of minimally invasive and ultra-minimally invasive surgery and can easily cause greater trauma to the patient.

[0005] There are no effective solutions to the problems in related technologies, such as the lack of dilation devices specifically for prostate surgery, the inconvenience of using existing surgical dilation devices, the inability of existing surgical dilation devices to adjust the contact area with tissue according to different patients, and the inability of existing surgical dilation devices to press and pull on the dissected prostate. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art by providing an expansion device for prostate surgery, thereby solving problems such as the lack of a dedicated expansion device for prostate surgery, the inconvenience of using existing surgical expansion devices, the inability of existing surgical expansion devices to adjust the contact area with tissue according to different patients, and the inability of existing surgical expansion devices to press and pull on the dissected prostate.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An expansion device for prostate surgery, comprising: Two first expansion units are arranged side by side, and the first end of the first expansion unit is arc-shaped, which is used to expand the patient's abdominal wall upward during surgery; Two first mounting units, the first ends of the two first mounting units are respectively connected to the second ends of the corresponding first supporting units, for mounting the corresponding first supporting units; A first gripping unit, wherein the first end of the first gripping unit is connected to the second ends of the two first mounting units respectively, and is set at an acute angle to the second ends of the two first mounting units respectively, for gripping; Two pressing units are arranged side by side on the side of the corresponding first spreading unit. The first end of the pressing unit is arc-shaped, and the arc direction of the pressing unit is the same as that of the first spreading unit. The first end of the pressing unit protrudes from the first end of the first spreading unit and is used to press down on the patient's prostate tissue during surgery. Two second mounting units are respectively located on the side of the corresponding first mounting unit, and the first ends of the two second mounting units are respectively connected to the second ends of the corresponding pressing units for mounting the corresponding pressing units; The second gripping unit is hinged to the first gripping unit. The first end of the second gripping unit is connected to the second end of the two second mounting units respectively, and is set at an obtuse angle to the second end of the two second mounting units respectively. It is used to cooperate with the first gripping unit to adjust the opening angle between the first end of the two first spreading units and the first end of the two pressing units. A first locking unit is movably disposed on the first gripping unit and the second gripping unit, and is used to lock the relative positions of the first gripping unit and the second gripping unit.

[0008] Furthermore, it also includes: Two second locking units are respectively disposed on the side of the first end of the second gripping unit away from the first gripping unit, and are respectively detachably locked to the corresponding second mounting unit.

[0009] Furthermore, it also includes: Two first angle adjustment units are respectively movably disposed on the corresponding first mounting unit and connected to the second end of the corresponding first spreading unit, for adjusting the angle of the corresponding first spreading unit.

[0010] Furthermore, it also includes: Two second expansion units are respectively disposed on the side of the corresponding first expansion unit. The second ends of the two second expansion units are detachably disposed on the corresponding first angle adjustment unit and located inside the corresponding second mounting unit, and are used to cooperate with the two first expansion units to expand the patient's abdominal wall upward during surgery.

[0011] Furthermore, it also includes: Two second angle adjustment units are respectively movably disposed on the corresponding second mounting unit and connected to the second end of the corresponding pressing unit, for adjusting the angle of the corresponding pressing unit.

[0012] The present invention adopts the above technical solution and has the following technical effects compared with the prior art: 1. The first locking unit locks the relative positions of the first holding unit and the second holding unit, so that the first holding unit and the second holding unit are close together and thus open the first spreading unit and the pressing unit. The first ends of the first spreading unit and the pressing unit are both set to be arc-shaped, and the pressing unit is set to be longer than the first spreading unit. It is specially designed for prostate surgery. During the operation, the first spreading unit can be used to safely support the patient's abdominal wall, and the arc-shaped structure of the pressing unit can be used to press the prostate tissue, creating a clear working space in the abdominal cavity. The second holding unit provides a surgical channel. There is no need to establish a pneumoperitoneum with CO2. The expansion operation is simple and provides great convenience for prostate surgery. It solves the problems of lack of expansion device for prostate surgery, inconvenience of using existing surgical expansion devices, and inability of existing surgical expansion devices to press the dissected prostate. 2. By using two second mounting units to slide and connect with the second gripping unit respectively, and using two second locking units to lock the relative positions of the corresponding second mounting units and second gripping units respectively, the length of the two pressing units can be adjusted outside the patient's body. This allows the pressing units to provide separate pressing and traction forces to the dissected prostate tissue, ensuring that the incision between the prostate tissue and the bladder is always exposed in the surgeon's field of vision. This not only improves surgical efficiency but also enables precise cutting and improves surgical accuracy, solving the problem that existing surgical dilation devices cannot press and traction the dissected prostate. 3. The second locking unit is connected to the first expansion unit and detachably locked to the first mounting unit. By rotating the second locking unit, the corresponding first expansion unit is rotated, thereby making the two first expansion units form different angles. The expansion area of ​​the two first expansion units can be flexibly adjusted according to different patients or the size of the surgical space to be established, which effectively solves the problem that the existing surgical expansion device cannot adjust the contact area with tissue according to different patients. 4. By using two second expansion units to be detachably locked to the corresponding first angle adjustment units, the second expansion units can be installed or removed according to the needs of the operation to increase or decrease the expansion area on the patient's upper abdominal wall, which further solves the problem that existing surgical expansion devices cannot adjust the contact area with tissues according to different patients. 5. By using two second angle adjustment units to drive the corresponding pressing units to rotate, and keeping them locked to the two second mounting units, the opening angle of the first end of the two pressing units can be adjusted according to the adaptability of different patients, which improves the flexibility of use and expands the scope of application. Attached Figure Description

[0013] Figure 1 This is a schematic diagram (a) of an expansion device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the first expansion unit according to an embodiment of the present invention; Figure 3 This is a schematic diagram (a) of the first mounting unit according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the first gripping unit according to an embodiment of the present invention; Figure 5 This is a schematic diagram of a pressing unit according to an embodiment of the present invention; Figure 6 This is a schematic diagram (a) of the second mounting unit according to an embodiment of the present invention; Figure 7 This is a schematic diagram (a) of the second gripping unit according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the first locking unit according to an embodiment of the present invention; Figure 9 This is a schematic diagram (II) of the expansion device according to an embodiment of the present invention; Figure 10 This is a schematic diagram (II) of the second mounting unit according to an embodiment of the present invention; Figure 11 This is a schematic diagram (II) of the second gripping unit according to an embodiment of the present invention; Figure 12 This is a schematic diagram of the second locking unit according to an embodiment of the present invention; Figure 13 This is a schematic diagram (iii) of the expansion device according to an embodiment of the present invention; Figure 14 This is a schematic diagram of the first mounting unit according to an embodiment of the present invention; Figure 15 This is a schematic diagram (a) of the first angle adjustment unit according to an embodiment of the present invention; Figure 16 This is a schematic diagram (four) of the expansion device according to an embodiment of the present invention; Figure 17 This is a schematic diagram (II) of the first angle adjustment unit according to an embodiment of the present invention; Figure 18 This is a schematic diagram of the second expansion unit according to an embodiment of the present invention; Figure 19 This is a schematic diagram (V) of the expansion device according to an embodiment of the present invention; Figure 20 This is a schematic diagram (iii) of the second mounting unit according to an embodiment of the present invention; Figure 21 This is a schematic diagram of the second angle adjustment unit according to an embodiment of the present invention.

[0014] The reference numerals in the attached figures are: 100. First spreading unit; 101. First spreading element; 102. First extension element; 110. First mounting unit; 111. First mounting element; 112. First chamber element; 113. Third movable element; 114. Second chamber element; 115. Seventh locking element; 120. First gripping unit; 121. First arc-shaped plate element; 122. First gripping element; 123. First supporting element; 124. First rotating element; 125. First movable element; 130. Pressing unit; 131. Pressing element; 132. Second extension element; 140. Second mounting unit; 141. Second mounting element; 142. First sliding element; 143. Third locking element; 144. Third gripping element; 145. Third chamber element; 146. Eleventh locking element; 150. Second gripping unit; 151. Second arc-shaped plate element; 152. Second gripping element; 153. Second support element; 154. Second rotating element; 155. Second movable element; 156. Channel element; 157. First base element; 158. Second sliding element; 159. Fourth locking element; 160. First locking unit; 161. First locking element; 162. First limiting element; 163. Second limiting element; 164. Second locking element; 165. Operating element; 170. Second locking unit; 171. Second base element; 172. Fifth locking element; 173. Placement element; 174. First reset element; 175. Fourth gripping element; 176. Sixth locking element; 180. First angle adjustment unit; 181. Third base element; 182. Fourth movable element; 183. Eighth locking element; 184. Fifth gripping element; 185. Second reset element; 186. Third mounting element; 187. Ninth locking element; 188. Third limit element; 190. Second opening unit; 191. Second opening element; 192. Third extension element; 193. Tenth locking element; 194. Fourth limiting element; 200. Second angle adjustment unit; 201. Twelfth locking element; 202. Sixth gripping element. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0016] Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without any inventive effort. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, any changes to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0017] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0018] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms “a,” “an,” “an,” “the,” and similar words used in this application do not indicate quantity limitation and may indicate singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or units (elements) is not limited to the listed steps or units, but may also include steps or units not listed, or may include other steps or units inherent to these processes, methods, products, or devices. The terms “connected,” “linked,” “coupled,” and similar words used in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. “Multiple” used in this application refers to two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following objects are in an "or" relationship. The terms "first," "second," and "third" used in this application are merely to distinguish similar objects and do not represent a specific ordering of the objects.

[0019] Example 1 An illustrative embodiment of the present invention, such as Figure 1As shown, an expansion device for prostate surgery includes two first spreading units 100, two first mounting units 110, a first holding unit 120, two pressing units 130, two second mounting units 140, a second holding unit 150, and a first locking unit 160. The system includes two first spreading units 100 arranged side-by-side, with the first end of each unit 100 being arc-shaped for upward spreading of the patient's abdominal wall during surgery. The first ends of two first mounting units 110 are connected to the second ends of their respective first spreading units 100 for mounting the units. The first ends of a first holding unit 120 are connected to the second ends of the two first mounting units 110, forming acute angles with each unit for holding. Two pressing units 130 are arranged side-by-side on the sides of their respective first spreading units 100, with the first end of each pressing unit 130 being arc-shaped, the arc direction of which is the same as that of the first spreading unit 100. The first end of the pressing unit 130 protrudes from the first end of the first spreading unit 100 for downward pressing during surgery. The device compresses the patient's prostate tissue; two second mounting units 140 are respectively located on the side of the corresponding first mounting unit 110, and the first ends of the two second mounting units 140 are respectively connected to the second ends of the corresponding pressing units 130 for mounting the corresponding pressing units 130; a second gripping unit 150 is hinged to the first gripping unit 120, and the first ends of the second gripping unit 150 are respectively connected to the second ends of the two second mounting units 140, and are respectively set at an obtuse angle to the second ends of the two second mounting units 140, for cooperating with the first gripping unit 120 to adjust the opening angle between the first ends of the two first spreading units 100 and the first ends of the two pressing units 130; a first locking unit 160 is movably disposed on the first gripping unit 120 and the second gripping unit 150 for locking the relative positions of the first gripping unit 120 and the second gripping unit 150.

[0020] In this embodiment, the two first supporting units 100 are of equal length, with a length range of 9~12 cm.

[0021] In this embodiment, the two pressing units 130 are of equal length, with a length range of 13~17 cm.

[0022] like Figure 2As shown, the first spreading unit 100 includes a first spreading element 101 and a first extension element 102. The first spreading element 101 is disposed on the side of the corresponding pressing unit 130, and is arc-shaped, with the arc direction of the first spreading element 101 being the same as that of the pressing unit 130, used to spread the patient's abdominal wall upwards during surgery. The first end of the first extension element 102 is connected to the second end of the first spreading element 101, and the second end of the first extension element 102 is connected to the first end of the corresponding first mounting unit 110.

[0023] In some of these embodiments, the arc angle of the first spreading element 101 ranges from 120° to 170°.

[0024] In some of these embodiments, the width of the first spreading element 101 ranges from 5 to 10 mm.

[0025] In some embodiments, the material of the first spreading element 101 includes, but is not limited to, plastic and metal.

[0026] In some of these embodiments, the first spreading element 101 is an arc-shaped support plate.

[0027] The connection between the first extension element 102 and the first expansion element 101 is a fixed connection, including but not limited to integral molding.

[0028] Generally, the radial dimension (such as outer diameter, length, and width) of the first extension element 102 is equal to the radial dimension (such as outer diameter, length, and width) of the first spreading element 101, and the length of the first extension element 102 is greater than the length of the first spreading element 101.

[0029] In some of these embodiments, the width of the first extension element 102 ranges from 5 to 10 mm.

[0030] In some embodiments, the material of the first extension element 102 includes, but is not limited to, metal and plastic.

[0031] In some of these embodiments, the first extension element 102 is a first extension rod or a first extension plate.

[0032] like Figure 3 As shown, the first mounting unit 110 includes a first mounting element 111. The first mounting element 111 is disposed on the side of the first spreading unit 100. The first end of the first mounting element 111 is connected to the second end of the corresponding first spreading unit 100. The second end of the first mounting element 111 is set at an acute angle to the first holding unit 120, and is used to mount the corresponding first spreading unit 100.

[0033] Specifically, the first end of the first mounting element 111 is connected to the second end of the first extension element 102 for mounting the first extension element 102.

[0034] The connection between the first mounting element 111 and the first extension element 102 is a fixed connection, including but not limited to integral molding.

[0035] Generally, the width of the first end of the first mounting element 111 is not less than the width of the second end of the first extension element 102, and the height of the first end of the first mounting element 111 is not less than the height of the second end of the first extension element 102.

[0036] In some of these embodiments, the angle between the first mounting element 111 and the first gripping unit 120 is 50° to 80°.

[0037] In some embodiments, the material of the first mounting element 111 includes, but is not limited to, metal and plastic.

[0038] In some of these embodiments, the first mounting element 111 is a first mounting plate.

[0039] like Figure 4 As shown, the first gripping unit 120 includes a first arc-shaped plate element 121, a first gripping element 122, two first supporting elements 123, two first rotating elements 124, and a first movable element 125. The first arc-shaped plate element 121 is disposed on the side of the second gripping unit 150, with its first end connected to the second ends of the two first mounting units 110 respectively. The first gripping element 122 is disposed at the second end of the first arc-shaped plate element 121, located on the side of the second gripping unit 150, and forms an acute angle with the first mounting unit 110 for gripping. The two first supporting elements 123 are symmetrically disposed on both sides of the first arc-shaped plate element 121. The two first rotating elements 124 are respectively disposed on the corresponding first supporting elements 123 and are rotatably connected to the second gripping unit 150. The first movable element 125 passes through the first gripping element 122 and is used to mount the first locking unit 160.

[0040] Specifically, the first end of the first arc-shaped plate element 121 is connected to the second end of the first mounting element 111.

[0041] The connection between the first arc-shaped plate element 121 and the first mounting element 111 is a fixed connection, including but not limited to integral molding.

[0042] Generally, the width of the first end of the first arc-shaped plate element 121 is equal to the width of the second end of the first mounting element 111, and the height of the first end of the first arc-shaped plate element 121 is equal to the height of the second end of the first mounting element 111.

[0043] In some of these embodiments, the material of the first arc-shaped plate element 121 includes, but is not limited to, plastic and metal.

[0044] In some of these embodiments, the curvature of the first arcuate plate element 121 ranges from 50° to 80°.

[0045] It is understandable that the curvature of the first arc-shaped plate element 121 is the angle between the first mounting element 111 and the first gripping element 122.

[0046] In some of these embodiments, the material of the first arc-shaped plate element 121 includes, but is not limited to, metal and plastic.

[0047] In some of these embodiments, the first arc-shaped plate element 121 is a first arc-shaped plate.

[0048] The connection between the first gripping element 122 and the first arc-shaped plate element 121 is a fixed connection, including but not limited to integral molding.

[0049] Generally, the width of the first end of the first gripping element 122 is equal to the width of the second end of the first arcuate plate element 121, and the height of the first end of the first gripping element 122 is equal to the height of the second end of the first arcuate plate element 121.

[0050] In some embodiments, the width of the first gripping element 122 decreases and then increases from the first end to the second end, such as being oval in shape.

[0051] In some embodiments, the material of the first gripping element 122 includes, but is not limited to, plastic and metal.

[0052] In some of these embodiments, the first gripping element 122 is a first gripping plate.

[0053] The connection between the first support element 123 and the first gripping element 122 is a fixed connection, including but not limited to integral molding.

[0054] In this invention, the width of the first support element 123 decreases from the first end (the end connected to the first arc-shaped plate element 121) to the second end.

[0055] Generally, the length of the first end of the first support element 123 is less than the arc length of the first arc plate element 121, and the thickness of the first support element 123 is less than the width of the first arc plate element 121.

[0056] In some of these embodiments, the first support element 123 is a first support plate.

[0057] The connection between the first rotating element 124 and the first supporting element 123 is a fixed connection, including but not limited to integral molding.

[0058] Generally, the radial dimension (e.g., outer diameter) of the first rotating element 124 is smaller than the radial dimension (e.g., outer diameter, length, width) of the cross section of the first supporting element 123 to which it is located.

[0059] In some of these embodiments, the first rotating element 124 is a rotating shaft.

[0060] Generally, the radial dimension (e.g., outer diameter) of the first movable element 125 is smaller than the radial dimension (e.g., length, width) of the cross-section of the first gripping element 122 in which it is located, and the height of the first movable element 125 is equal to the thickness of the first gripping element 122.

[0061] In some of these embodiments, the first movable element 125 is a first movable hole.

[0062] Furthermore, the first grip unit 120 also includes a first anti-slip element. The first anti-slip element is disposed on the side of the first grip unit 122 away from the second grip unit 150 for anti-slip purposes.

[0063] The first anti-slip element and the first gripping element 122 are connected by a fixed connection, including but not limited to integral molding and adhesive bonding.

[0064] Generally, the radial dimension (such as length and width) of the first anti-slip element is smaller than the radial dimension (such as length and width) of the cross section of the first gripping element 122 in which it is located.

[0065] In some embodiments, the number of first anti-slip elements is several, and the several first anti-slip elements are distributed at intervals along the length and / or width direction of the first gripping element 122.

[0066] In some of these embodiments, the first anti-slip element is a first anti-slip texture or a first anti-slip pad.

[0067] like Figure 5 As shown, the pressing unit 130 includes a pressing element 131 and a second extension element 132. The pressing element 131 is disposed on the side of the first spreading unit 100, and is arc-shaped. The first end of the pressing element 131 protrudes from the first end of the first spreading unit 100, and the arc direction of the pressing element 131 is the same as that of the first spreading unit 100. It is used to press the patient's prostate tissue. The first end of the second extension element 132 is connected to the second end of the pressing element 131, and the second end of the second extension element 132 is connected to the first end of the corresponding second mounting unit 140.

[0068] Specifically, the first end of the pressing element 131 protrudes from the first end of the first spreading element 101, and the arc direction of the pressing element 131 is the same as the arc direction of the first spreading element 101.

[0069] In some of these embodiments, the arc angle of the pressing element 131 ranges from 120° to 170°.

[0070] In some of these embodiments, the width of the pressing element 131 ranges from 5 to 12 mm.

[0071] In some embodiments, the material of the pressing element 131 includes, but is not limited to, metal and plastic.

[0072] In some of these embodiments, the pressing element 131 is an arc-shaped pressing plate.

[0073] The second extension element 132 and the pressing element 131 are connected in a fixed manner, including but not limited to integral molding.

[0074] Generally, the length of the second extension element 132 is greater than the length of the first extension element 102.

[0075] Generally, the radial dimension (e.g., outer diameter, length, width) of the first end of the second extension element 132 is equal to the radial dimension (e.g., length, width) of the second end of the pressing element 131.

[0076] In some embodiments, the width of the second extension element 132 ranges from 5 to 12 mm.

[0077] In some embodiments, the material of the second extension element 132 includes, but is not limited to, plastic and metal.

[0078] In some of these embodiments, the second extension element 132 is a second extension rod or a second extension plate.

[0079] like Figure 6 As shown, the second mounting unit 140 includes a second mounting element 141. The second mounting element 141 is disposed on the side of the corresponding first mounting unit 110, the first end of the second mounting element 141 is connected to the second end of the corresponding pressing unit 130, and the second mounting element 141 is set at an obtuse angle to the second gripping unit 150 for mounting the corresponding pressing unit 130.

[0080] Specifically, the first end of the second mounting element 141 is connected to the second end of the second extension element 132 for mounting the second extension element 132.

[0081] The connection between the second mounting element 141 and the second extension element 132 is a fixed connection, including but not limited to integral molding.

[0082] Generally, the width of the first end of the second mounting element 141 is not less than the width of the second end of the second extension element 132, and the height of the first end of the second mounting element 141 is not less than the height of the second end of the second extension element 132.

[0083] In some embodiments, the angle between the second mounting element 141 and the second gripping unit 150 ranges from 95° to 150°.

[0084] In some embodiments, the material of the second mounting element 141 includes, but is not limited to, metal and plastic.

[0085] In some of these embodiments, the second mounting element 141 is a second mounting plate.

[0086] like Figure 7 As shown, the second gripping unit 150 includes a second arc-shaped plate element 151, a second gripping element 152, two second support elements 153, two second rotating elements 154, a second movable element 155, and a channel element 156. The second arc-shaped plate element 151 is disposed on the side of the first gripping unit 120, and the first end of the second arc-shaped plate element 151 is connected to the second ends of the two second mounting units 140 respectively. The second gripping element 152 is disposed on the second end of the second arc-shaped plate element 151 and is located on the side of the first gripping unit 120, and is set at an obtuse angle with the second mounting unit 140 for gripping. The two second support elements 153 are symmetrically disposed on both sides of the second arc-shaped plate element 151 and are located on the side of the first gripping unit 120. The two second rotating elements 154 are respectively disposed on the corresponding second support elements 153 and are rotatably connected to the first gripping unit 120 respectively. The second movable element 155 is disposed through the second gripping element 152 for setting the first locking unit 160. The channel element 156 is disposed through the second end of the second arc-shaped plate element 151 and the first end of the second gripping element 152 for providing a passage for surgical instruments.

[0087] Specifically, the second arc-shaped plate element 151 is disposed on the side of the first arc-shaped plate element 121, and the first end of the second arc-shaped plate element 151 is connected to the second end of the second mounting element 141; the second gripping element 152 is disposed on the side of the first gripping element 122; the two second supporting elements 153 are respectively located on the side of the corresponding first supporting element 123; and the two second rotating elements 154 are respectively rotatably connected to the corresponding first rotating element 124.

[0088] The connection between the second arc-shaped plate element 151 and the second mounting element 141 is a fixed connection, including but not limited to integral molding.

[0089] Generally, the width of the first end of the second arc-shaped plate element 151 is equal to the width of the second end of the second mounting element 141, and the height of the first end of the second arc-shaped plate element 151 is equal to the height of the second end of the second mounting element 141.

[0090] In some embodiments, the material of the second arc-shaped plate element 151 includes, but is not limited to, plastic and metal.

[0091] In some of these embodiments, the arcuate range of the second arcuate plate element 151 is 95° to 150°.

[0092] It is understandable that the curvature of the second arc-shaped plate element 151 is the angle between the second mounting element 141 and the second gripping element 152.

[0093] In some of these embodiments, the second arcuate plate element 151 is a second arcuate plate.

[0094] The connection between the second gripping element 152 and the second arc-shaped plate element 151 is a fixed connection, including but not limited to integral molding.

[0095] Generally, the width of the first end of the second gripping element 152 is equal to the width of the second end of the second arcuate plate element 151, and the height of the first end of the second gripping element 152 is equal to the height of the second end of the second arcuate plate element 151.

[0096] In some embodiments, the width of the second gripping element 152 decreases and then increases from the first end to the second end, such as being oval in shape.

[0097] In some embodiments, the material of the second gripping element 152 includes, but is not limited to, plastic and metal.

[0098] In some of these embodiments, the second gripping element 152 is a second gripping plate.

[0099] The connection between the second support element 153 and the second gripping element 152 is a fixed connection, including but not limited to integral molding.

[0100] In this invention, the width of the second support element 153 decreases from the first end (the end connected to the second arcuate plate element 151) to the second end.

[0101] Generally, the length of the first end of the second support element 153 is less than the arc length of the second arc plate element 151, and the thickness of the second support element 153 is less than the width of the second arc plate element 151.

[0102] In some of these embodiments, the second support element 153 is a second support plate.

[0103] The connection between the second rotating element 154 and the second supporting element 153 is a fixed connection, including but not limited to integral molding.

[0104] Generally, the radial dimension (e.g., outer diameter) of the second rotating element 154 is not greater than the radial dimension (e.g., outer diameter) of the first rotating element 124, and the height of the second rotating element 154 is not less than the height of the first rotating element 124.

[0105] Understandably, the first rotating element 124 and the second rotating element 154 can rotate relative to each other, but they will not separate.

[0106] Generally, the radial dimension (e.g., outer diameter) of the second rotating element 154 is smaller than the radial dimension (e.g., outer diameter, length, width) of the cross-section of the second supporting element 153 to which it is located.

[0107] In some of these embodiments, the second rotating element 154 is a rotating groove.

[0108] Generally, the radial dimension (e.g., outer diameter) of the second movable element 155 is smaller than the radial dimension (e.g., length, width) of the cross-section of the second gripping element 152 in which it is located, and the height of the second movable element 155 is equal to the thickness of the second gripping element 152.

[0109] In some of these embodiments, the second movable element 155 is a second movable hole.

[0110] In some embodiments, one of the second movable element 155 and the first movable element 125 is an elongated hole, which allows the first locking unit 160 to move in a limited manner when the second gripping element 152 approaches or separates from the first gripping element 122.

[0111] Generally, the length of the channel element 156 is less than the length of the second arc-shaped plate element 151 and the second gripping element 152, the width of the channel element 156 is less than the width of the second arc-shaped plate element 151 and the second gripping element 152, and the height of the channel element 156 is equal to the thickness of the second arc-shaped plate element 151 and the second gripping element 152 to which it is located.

[0112] In some of these embodiments, the channel element 156 has a circular cross-section.

[0113] In some of these embodiments, channel element 156 is a channel.

[0114] Furthermore, the second grip unit 150 also includes a second anti-slip element. The second anti-slip element is disposed on the side of the second grip unit 152 away from the first grip unit 120, and is used for anti-slip.

[0115] Specifically, the second anti-slip element is disposed on the side of the second gripping element 152 away from the first gripping element 122.

[0116] The second anti-slip element and the second gripping element 152 are connected by a fixed connection, including but not limited to integral molding and adhesive bonding.

[0117] Generally, the radial dimension (such as length and width) of the second anti-slip element is smaller than the radial dimension (such as length and width) of the cross-section of the second gripping element 152 in which it is located.

[0118] In some embodiments, the number of second anti-slip elements is several. These second anti-slip elements are spaced apart along the length and / or width direction of the second gripping element 152.

[0119] In some of these embodiments, the second anti-slip element is a second anti-slip texture or a second anti-slip pad.

[0120] like Figure 8 As shown, the first locking unit 160 includes a first locking element 161, a first limiting element 162, a second limiting element 163, a second locking element 164, and an operating element 165. The first locking element 161 is movably disposed through the first gripping unit 120 and the second gripping unit 150; the first limiting element 162 is disposed at the first end of the first locking element 161 and located on the side of the first gripping unit 120 away from the second gripping unit 150, to prevent the first end of the first locking element 161 from separating from the first gripping unit 120; the second limiting element 163 is disposed at the second end of the first locking element 161 and located on the side of the second gripping unit 150 away from the first gripping unit 120, to prevent... The first locking element 161 is prevented from separating from the second gripping unit 150; the second locking element 164 is sleeved on the first locking element 161 and locked to the first locking element 161, and abuts against the first gripping unit 120 or the second gripping unit 150, for locking the length of the first locking element 161 between the first gripping unit 120 and the second gripping unit 150; the operating element 165 is disposed on the side of the second locking element 164 for rotating to make the second locking element 164 move relative to the first locking element 161.

[0121] Specifically, the first locking element 161 is disposed through the first movable element 125 and the second movable element 155; the first limiting element 162 is disposed on the side of the first movable element 125 to prevent the first locking element 161 from separating from the first movable element 125; the second limiting element 163 is disposed on the side of the second movable element 155 and is located away from the second gripping element 152 to prevent the first locking element 161 from separating from the second movable element 155.

[0122] Generally, the radial dimension (e.g., outer diameter) of the first locking element 161 is smaller than the radial dimensions (e.g., outer diameter, length, width) of the first movable element 125 and the second movable element 155.

[0123] In some of these embodiments, the outer edge of the first locking element 161 is provided with external threads.

[0124] In some of these embodiments, the first locking element 161 is a first threaded rod.

[0125] The connection between the first limiting element 162 and the first locking element 161 is a fixed connection, including but not limited to integral molding and welding.

[0126] Generally, the radial dimension (e.g., outer diameter) of the first limiting element 162 is greater than the radial dimension (e.g., outer diameter) of the first movable element 125.

[0127] In some of these embodiments, the first limiting element 162 is a first limiting plate.

[0128] The second limiting element 163 and the first locking element 161 are connected in a fixed manner, including but not limited to integral molding.

[0129] Generally, the radial dimension (e.g., outer diameter) of the second limiting element 163 is greater than the radial dimension (e.g., outer diameter) of the first locking element 161.

[0130] In some of these embodiments, the second limiting element 163 is a second limiting plate.

[0131] The second locking element 164 is detachably threadedly connected to the first locking element 161.

[0132] Generally, the radial dimension (e.g., inner diameter) of the second locking element 164 is equal to the radial dimension (e.g., outer diameter) of the first locking element 161, and the height of the second locking element 164 is less than the height of the first locking element 161.

[0133] In some of these embodiments, the second locking element 164 is the first locking nut.

[0134] The connection between the operating element 165 and the second locking element 164 is a fixed connection, including but not limited to integral molding.

[0135] The connection between the operating element 165 and the second locking element 164 is a fixed connection, including but not limited to integral molding.

[0136] Generally, the radial dimension (e.g., outer diameter) of the operating element 165 is greater than the radial dimension (e.g., outer diameter) of the second locking element 164.

[0137] In some of these embodiments, the operating element 165 is arranged in a bow and arrow shape.

[0138] In some of these embodiments, the operating element 165 is an operating handle.

[0139] Method of using this invention: Before use, the first gripping element 122 and the second gripping element 152 are separated, and the first end of the first spreading element 101 is attached to the pressing element 131. The doctor inserts the first spreading element 101 and the pressing element 131 into the patient's body through a surgical incision, so that the first mounting element 111 and the second mounting element 141 are located outside the patient's body. Pressing the first gripping element 122 and the second gripping element 152 causes the first rotating element 124 and the second rotating element 154 to rotate relative to each other, and the first spreading element 101 separates from the pressing element 131 and opens up. The first spreading element 101 spreads open the inner side of the patient's abdominal wall, lifting the patient's abdomen. The pressing element 131 presses the patient's prostate tissue until the field of view opened by the first spreading element 101 and the pressing element 131 meets the requirements of the surgical working space. Then, the operating element 165 is rotated, which in turn drives the second locking element 164 to move relative to the first locking element 161 until the relative position of the first holding element 122 and the second holding element 152 is locked. The surgical instruments can then be inserted into the patient's abdomen through the channel element 156 to perform the surgery.

[0140] After the surgery is completed, remove the surgical instruments, rotate the operating element 165 to make the second locking element 164 and the first locking element 161 move in opposite directions to the maximum extent, the second gripping element 152 separates from the first gripping element 122, the first spreading element 101 and the pressing element 131 fit together, and then remove the dilation device.

[0141] The dilation device described in this application can be used for single purposes or reused. When used as a single-use device, it can be disposed of according to hygiene requirements after the operation; when reused, it needs to be cleaned and disinfected for future use.

[0142] The technical effects of this invention are as follows: The first locking unit 160 locks the relative positions of the first gripping unit 120 and the second gripping unit 150, bringing them closer together to open the first spreading unit 100 and the pressing unit 130. The first ends of both the first spreading unit 100 and the pressing unit 130 are arc-shaped, and the pressing unit 130 is longer than the first spreading unit 100, specifically designed for prostate surgery. This allows the first spreading unit 100 to safely support the patient's abdominal wall during surgery, while the arc-shaped structure of the pressing unit 130 presses the prostate tissue, creating a clear working space within the abdominal cavity. Furthermore, the second gripping unit 150 provides a surgical channel, eliminating the need for CO2-filled pneumoperitoneum. The expansion operation is simple, greatly facilitating prostate surgery and solving the problems of a lack of specialized expansion devices for prostate surgery, the inconvenience of existing surgical expansion devices, and the inability of existing surgical expansion devices to press on the dissected prostate.

[0143] Example 2 This embodiment is a modified embodiment of embodiment 1.

[0144] like Figure 9 As shown, the expansion device also includes two second locking units 170. The two second locking units 170 are respectively disposed on the side of the first end of the second gripping unit 150 away from the first gripping unit 120, and are respectively detachably locked to the corresponding second mounting unit 140.

[0145] like Figure 10 As shown, the second mounting unit 140 further includes two first sliding elements 142, a plurality of third locking elements 143, and two third gripping elements 144. The two first sliding elements 142 are symmetrically disposed at the second ends of the corresponding second mounting units 140 and are slidably connected to the second gripping unit 150. The plurality of third locking elements 143 are distributed on the side of the corresponding first sliding element 142 away from the first gripping unit 120 and are detachably locked to the corresponding second locking unit 170, used to cooperate with the corresponding second locking unit 170 to lock the relative position of the corresponding first sliding element 142 and the second gripping unit 150. The two third gripping elements 144 are respectively disposed at the second ends of the corresponding first sliding elements 142 and are respectively limited connected to the second gripping unit 150 for gripping.

[0146] Specifically, two first sliding elements 142 are symmetrically disposed at the second end of the second mounting element 141.

[0147] The connection between the first sliding element 142 and the second mounting element 141 is a fixed connection, generally including but not limited to integral molding.

[0148] Generally, the width of the first sliding element 142 is less than half the width of the second mounting element 141, and the height of the first sliding element 142 is not greater than the height of the second mounting element 141.

[0149] In some of these embodiments, the length of the first sliding element 142 ranges from 5 to 10 cm.

[0150] In some embodiments, the material of the first sliding element 142 includes, but is not limited to, plastic and metal.

[0151] In some of these embodiments, the first sliding element 142 is a sliding plate.

[0152] Several third locking elements 143 are spaced apart along the length direction of the corresponding first sliding element 142.

[0153] Generally, the length of the third locking element 143 is equal to the width of the first sliding element 142, the width of the third locking element 143 is less than the length of the first sliding element 142, and the height of the third locking element 143 is less than the height of the first sliding element 142.

[0154] In some of these embodiments, the third locking element 143 is the first locking slot.

[0155] The third gripping element 144 is fixedly connected to the first sliding element 142. Generally, this includes, but is not limited to, integral molding.

[0156] Generally, the width of the third gripping element 144 is equal to the width of the first sliding element 142, and the height of the third gripping element 144 is greater than the height of the first sliding element 142.

[0157] In some of these embodiments, the shape of the cross-section of the third gripping element 144 includes, but is not limited to, a semi-circle.

[0158] In some of these embodiments, the third gripping element 144 is a third grip plate.

[0159] like Figure 11 As shown, the second gripping unit 150 also includes a first base element 157 and two second sliding elements 158. The first base element 157 is disposed on the side of the first end of the second gripping unit 150 away from the first gripping unit 120; the two second sliding elements 158 are respectively disposed through the first base element 157, and the two second sliding elements 158 are not connected to each other, and are respectively slidably connected to the corresponding second mounting unit 140 for adjusting the length of the corresponding second mounting unit 140.

[0160] Specifically, the first base element 157 is disposed on the side of the second arc-shaped plate element 151 away from the first gripping element 122; the two second sliding elements 158 are respectively slidably connected to the corresponding first sliding elements 142 for adjusting the length of the first sliding elements 142.

[0161] The connection between the first base element 157 and the second arc-shaped plate element 151 is a fixed connection. Generally, this includes, but is not limited to, integral molding.

[0162] Generally, the length of the first base element 157 is less than the length of the interface of the second arc-shaped plate element 151 on which it is located, and the width of the first base element 157 is not greater than the width of the second arc-shaped plate element 151.

[0163] In some of these embodiments, the first base element 157 is a first base.

[0164] The length of the second sliding element 158 ​​is less than the length of the first sliding element 142, the width of the second sliding element 158 ​​is not less than the width of the first sliding element 142, and the height of the second sliding element 158 ​​is not less than the height of the first sliding element 142.

[0165] The length of the second sliding element 158 ​​is equal to the length of the first base element 157, the width of the second sliding element 158 ​​is less than half the width of the first base element 157, and the height of the second sliding element 158 ​​is less than the height of the first base element 157.

[0166] In some of these embodiments, the second sliding element 158 ​​is a sliding groove.

[0167] In this embodiment, the distance by which the first sliding element 142 slides relative to the second sliding element 158 ​​is not less than 5 cm; that is, the length of the first sliding element 142 is adjusted by not less than 5 cm.

[0168] Furthermore, the second gripping unit 150 also includes two fourth locking elements 159. The two fourth locking elements 159 are respectively disposed on the side of the first base element 157 away from the first gripping unit 120, and are not connected to the corresponding second sliding element 158, and are respectively detachably locked to the corresponding second locking unit 170.

[0169] Specifically, the two fourth locking elements 159 are respectively disposed on the side of the first base element 157 away from the first gripping element 122.

[0170] Generally, the length of the fourth locking element 159 is less than the length of the first base element 157, the width of the fourth locking element 159 is less than half the width of the first base element 157, and the sum of the heights of the fourth locking element 159 and the second sliding element 158 ​​is less than the height of the first base element 157.

[0171] In some of these embodiments, the fourth locking element 159 is a second locking slot.

[0172] like Figure 12 As shown, the second locking unit 170 includes a second base element 171, a fifth locking element 172, a placement element 173, a plurality of first reset elements 174, and a fourth gripping element 175. The second base element 171 is movably disposed on the side of the first end of the second gripping unit 150 away from the first gripping unit 120; the fifth locking element 172 is disposed on the second base element 171 and detachably locked to the corresponding second mounting unit 140, used to lock the relative position of the corresponding second mounting unit 140 and the second gripping unit 150; the placement element 173 is disposed on the second base element 171 and located on the side of the fifth locking element 172, abutting against the second gripping unit 150; the plurality of first reset elements 174 are distributed inside the placement element 173, with both ends of the plurality of first reset elements 174 connected to the second gripping unit 150 and the placement element 173 respectively, used for resetting; the fourth gripping element 175 is disposed on the second base element 171 for gripping.

[0173] Specifically, the second base element 171 is movably disposed on the side of the first base element 157; the fifth locking element 172 is detachably locked to the corresponding third locking element 143, and is used to lock the relative position of the corresponding first sliding element 142 and the first base element 157; the two ends of the first reset element 174 are respectively connected to the first base element 157 and the placement element 173, and are used for reset.

[0174] Generally, the length of the second base element 171 is not greater than the width of the first base element 157.

[0175] In some of these embodiments, the second base element 171 is a second base.

[0176] The fifth locking element 172 is fixedly connected to the second base element 171. Generally, this includes, but is not limited to, integral molding.

[0177] Generally, the length of the fifth locking element 172 is not greater than the length of the third locking element 143, the width of the fifth locking element 172 is not greater than the width of the third locking element 143, and the height of the fifth locking element 172 is not less than the height of the third locking element 143.

[0178] Generally, the length of the fifth locking element 172 is not greater than the length of the second base element 171, and the width of the fifth locking element 172 is less than the width of the second base element 171.

[0179] In some of these embodiments, the fifth locking element 172 is the first locking block.

[0180] Generally, the length of the placement element 173 is not greater than the length of the second base element 171, and the width of the placement element 173 is less than the width of the second base element 171.

[0181] Generally, the height of the placement element 173 is less than the height of the fifth locking element 172.

[0182] In some of these embodiments, placement element 173 is a placement slot.

[0183] Several first reset elements 174 are spaced apart along the length direction of the placement element 173.

[0184] The first reset element 174 is fixedly connected to the first base element 157 and the placement element 173. Generally, this includes, but is not limited to, soldering.

[0185] Generally, the radial dimension (e.g., outer diameter) of the first reset element 174 is smaller than the radial dimension (e.g., inner diameter, length, width) of the placement element 173, and the length of the first reset element 174 in the relaxed state is smaller than the height of the placement element 173.

[0186] In some of these embodiments, the first reset element 174 is a first reset spring.

[0187] Furthermore, the second locking unit 170 also includes a sixth locking element 176. The sixth locking element 176 is disposed on the second base element 171 and located on the side of the placement element 173, and is detachably locked to the second gripping unit 150.

[0188] Specifically, the sixth locking element 176 is detachably locked to the corresponding fourth locking element 159.

[0189] The sixth locking element 176 is fixedly connected to the second base element 171. Generally, this includes, but is not limited to, integral molding.

[0190] Generally, the length of the sixth locking element 176 is not greater than the length of the fourth locking element 159, the width of the sixth locking element 176 is not greater than the width of the fourth locking element 159, and the height of the sixth locking element 176 is not less than the height of the fourth locking element 159.

[0191] In some of these embodiments, the sixth locking element 176 is a second locking block.

[0192] The usage method of this embodiment is as follows: During the operation, when the doctor slowly separates the patient's prostate tissue from the bladder, since the pressing element 131 is set with an arc-shaped structure, the two pressing elements 131 can respectively provide pressing and traction forces to the separated prostate tissue on both sides of the bladder. The specific operation is as follows: Hold and pull the fourth holding element 175 on the corresponding side, the first reset element 174 undergoes tensile deformation, the fifth locking element 172 separates from the third locking element 143, the sixth locking element 176 separates from the fourth locking element 159, and pull the third holding element 144 so that the first sliding element 142 is relative to the second sliding element 159. The two elements slide relative to each other, thereby driving the second extension element 132 and the pressing element 131 to move closer to the second gripping element 152, thereby achieving traction on the dissected prostate tissue. When the dissected prostate tissue has been pulled to the required position or when the prostate tissue no longer needs to be pulled, the fourth gripping element 175 is released, several first reset elements 174 return to their original shape, and the fifth locking element 172 enters the corresponding third locking element 143 to lock the relative position of the first sliding element 142 and the first base element 157, that is, the position of the two pressing elements 131 is locked. At the same time, the sixth locking element 176 enters the corresponding fourth locking element 159 to form a second layer of locking.

[0193] To re-target different locations or pull on different sides of the prostate tissue, repeat the above procedure.

[0194] The technical effects of this embodiment are as follows: By using two second mounting units to slide and connect with the second gripping unit respectively, and by using two second locking units to lock the relative positions of the corresponding second mounting units and the second gripping units respectively, the length of the two pressing units can be adjusted outside the patient's body, thereby enabling the pressing units to provide separate pressing and traction forces to the dissected prostate tissue. This ensures that the incision between the prostate tissue and the bladder is always exposed in the surgeon's surgical field, which not only improves surgical efficiency but also enables precise cutting and improves surgical accuracy. This solves the problem that existing surgical dilation devices cannot press and traction the dissected prostate.

[0195] Example 3 This embodiment is a modified embodiment of Embodiments 1 and 2.

[0196] like Figure 13 As shown, the expansion device also includes two first angle adjustment units 180. The two first angle adjustment units 180 are movably disposed on the corresponding first mounting unit 110 and connected to the second end of the corresponding first spreading unit 100, for adjusting the angle of the corresponding first spreading unit 100.

[0197] In some of these embodiments, the angle adjustment range of the first angle adjustment unit 180 is 5° to 40°.

[0198] like Figure 14 As shown, the first mounting unit 110 also includes a first chamber element 112, a third movable element 113, a second chamber element 114, and a seventh locking element 115. The first chamber element 112 is disposed through the first end of the first mounting unit 110, and the first opening unit 100 and the first angle adjustment unit 180 are movably disposed inside the first chamber element 112; the third movable element 113 is disposed through the side of the first mounting unit 110 away from the second mounting unit 140 and is connected to the first chamber element 112, and the first angle adjustment unit 180 is movably disposed inside the third movable element 113; the second chamber element 114 is disposed inside the first mounting unit 110 and located on the side of the first chamber element 112, and is connected to the third movable element 113, and is used to accommodate the locking structure of the first angle adjustment unit 180 when the first angle adjustment unit 180 is rotated; the seventh locking element 115 is disposed on the side of the second chamber element 114 and is coaxially disposed with the second chamber element 114, and is detachably locked to the first angle adjustment unit 180, and is used to lock the relative position of the first angle adjustment unit 180 and the first mounting unit 110.

[0199] Specifically, the first chamber element 112 is disposed through the first end of the first mounting element 111; the third movable element 113 is disposed through the side of the first mounting element 111 away from the second mounting element 141; the second chamber element 114 is disposed inside the first mounting element 111 and is coaxially disposed with the third movable element 113, but is not connected to the first chamber element 112 or the third movable element 113; the seventh locking element 115 is disposed inside the first mounting element 111 and is connected to the second chamber element 114, and is used to lock the relative position of the first angle adjustment unit 180 and the first mounting element 111.

[0200] Generally, the height of the first chamber element 112 is greater than the height of the first extension element 102, and the width of the first chamber element 112 is greater than the width of the first extension element 102.

[0201] Generally, the length of the first chamber element 112 is less than the length of the first mounting element 111, the width of the first chamber element 112 is less than the width of the first mounting element 111, and the height of the first chamber element 112 is less than the height of the first mounting element 111.

[0202] In some of these embodiments, the first chamber element 112 is a first active chamber.

[0203] Generally, the radial dimension (e.g., outer diameter) of the third movable element 113 is smaller than the radial dimension (e.g., outer diameter) of the first mounting element 111, and the sum of the heights of the third movable element 113 and the first chamber element 112 is smaller than the height of the first mounting element 111.

[0204] Generally, the radial dimension (e.g., outer diameter) of the third movable element 113 is smaller than the radial dimension (e.g., outer diameter) of the first chamber element 112.

[0205] In some of these embodiments, the third movable element 113 is a third movable hole.

[0206] Generally, the radial dimension (e.g., outer diameter) of the second chamber element 114 is smaller than the radial dimension (e.g., length, width) of the first mounting element 111.

[0207] Generally, the height of the second chamber element 114 is less than the height of the third movable element 113.

[0208] In some of these embodiments, the cross-sectional shape of the second chamber element 114 is circular.

[0209] In some of these embodiments, the second chamber element 114 is a second active chamber.

[0210] Generally, the radial dimension (e.g., outer diameter) of the seventh locking element 115 is smaller than the radial dimension (e.g., length, width) of the first mounting element 111, and the sum of the heights of the seventh locking element 115, the first chamber element 112, and the second chamber element 114 is smaller than the height of the first mounting element 111.

[0211] Generally, the outer diameter of the seventh locking element 115 is not less than the outer diameter of the second chamber element 114, the inner diameter of the seventh locking element 115 is less than the outer diameter of the second chamber element 114, and the height of the seventh locking element 115 is not less than the height of the second chamber element 114.

[0212] In some of these embodiments, the seventh locking element 115 is an internal gear.

[0213] like Figure 15As shown, the first angle adjustment unit 180 includes a third base element 181, a fourth movable element 182, an eighth locking element 183, a fifth gripping element 184, and a second reset element 185. The third base element 181 is movably disposed inside the corresponding first mounting unit 110 and connected to the corresponding first spreading unit 100; the fourth movable element 182 is disposed on the side of the third base element 181 and passes through the corresponding first mounting unit 110, for driving the third base element 181 to move; the eighth locking element 183 is disposed on the fourth movable element 182 and is located inside the corresponding first mounting unit 110, and is detachably locked to the corresponding first mounting unit 110, for locking the relative position of the third base element 181 and the corresponding first mounting unit 110; the fifth gripping element 184 is disposed at the end of the fourth movable element 182 away from the third base element 181, for gripping; the second reset element 185 is sleeved on the fourth movable element 182 and is located outside the corresponding first mounting unit 110, and the two ends of the second reset element 185 abut against the corresponding first mounting unit 110 and the fifth gripping element 184 respectively, for resetting.

[0214] Specifically, the third base element 181 is movably disposed inside the corresponding first chamber element 112 and connected to the corresponding first delay element; the fourth movable element 182 is disposed through the corresponding third movable element 113; the eighth locking element 183 is detachably locked to the corresponding seventh locking element 115, and after being separated from the seventh locking element 115, the eighth locking element 183 is located in the second chamber element 114; it is used to lock the relative position of the third base element 181 and the first mounting element 111; the fifth gripping element 184 is located outside the first mounting element 111; the two ends of the second reset element 185 abut against the first mounting element 111 and the fifth gripping element 184, respectively.

[0215] The connection between the third base element 181 and the first extension element 102 is a fixed connection, including but not limited to integral molding and welding.

[0216] Generally, the radial dimension (e.g., length, width) of the third base element 181 is greater than the radial dimension (e.g., length, width) of the second end of the first extension element 102.

[0217] Generally, the radial dimension (such as length and width) of the third base element 181 is smaller than the radial dimension (such as length and width) of the first chamber element 112, and the height of the third base element 181 is smaller than the height of the first chamber element 112.

[0218] Generally, the radial dimension (e.g., length, width) of the third base element 181 is greater than the radial dimension (e.g., outer diameter) of the third movable element 113.

[0219] In some of these embodiments, the third base element 181 is a third base.

[0220] The connection between the fourth active element 182 and the third base element 181 is a fixed connection, including but not limited to integral molding.

[0221] Generally, the radial dimension (e.g., outer diameter) of the fourth movable element 182 is not greater than the radial dimension (e.g., outer diameter) of the third movable element 113, and the height of the fourth movable element 182 is greater than the height of the third movable element 113.

[0222] In some of these embodiments, the fourth moving element 182 is a moving rod.

[0223] The eighth locking element 183 and the fourth movable element 182 are connected in a fixed manner. Generally, this includes, but is not limited to, integral molding.

[0224] Generally, the radial dimension (e.g., outer diameter) of the eighth locking element 183 is not greater than the radial dimension (e.g., outer diameter) of the second chamber element 114, and the height of the eighth locking element 183 is not greater than the height of the second chamber element 114.

[0225] Generally, the radial dimension (e.g., outer diameter) of the eighth locking element 183 is greater than the radial dimension (e.g., inner diameter) of the seventh locking element 115, and the height of the eighth locking element 183 is not greater than the height of the seventh locking element 115.

[0226] In some of these embodiments, the eighth locking element 183 is an external gear and is engaged with the seventh locking element 115.

[0227] The fifth gripping element 184 and the fourth movable element 182 are connected in a fixed manner. Generally, this includes, but is not limited to, integral molding.

[0228] Generally, the radial dimension (e.g., outer diameter) of the fifth gripping element 184 is greater than the radial dimension (e.g., outer diameter) of the third moving element 113.

[0229] In some embodiments, the fourth movable element 182 includes a third limiting plate and a first screwing member. The third limiting plate is connected to the fourth movable element 182 and abuts against the second reset element 185; the first screwing member is disposed on the side of the third limiting plate and is used to screw when the fourth movable element 182 is rotated.

[0230] Generally, the radial dimension (e.g., inner diameter) of the second reset element 185 is greater than the radial dimension (e.g., outer diameter) of the fourth moving element 182.

[0231] Generally, the sum of the height of the second reset element 185 in the relaxed state and the height of the third movable element 113 is greater than the height of the fourth movable element 182. In the fully compressed state of the second reset element 185, the eighth locking element 183 is separated from the seventh locking element 115. The eighth locking element 183 is located in the second chamber element 114 to ensure that the eighth locking element 183 and the seventh locking element 115 are locked together without external force.

[0232] In some of these embodiments, the second reset element 185 is a second reset spring.

[0233] The usage method of this embodiment is as follows: During surgery, the distance between the first ends of the two first spreading units 100 can be adjusted according to the size of the surgical incision or the working space to be established, so that the two first spreading units 100 form a fan-shaped cross section, thereby adjusting the size of the spreading area on the abdominal wall. The specific operation is as follows: After placing the first dispersing unit 100 and the pressing unit 130 into the patient's abdominal cavity using the method of Embodiment 1, one hand holds the first gripping element 122, and the other hand holds the fifth gripping element 184 to press down, compressing the second reset element 185. The eighth locking element 183 separates from the seventh locking element 115, and the eighth locking element 183 enters the second chamber element 114. Then, the fifth gripping element 184 is rotated, causing the fourth movable element 182 to rotate, which in turn causes the third base element 181, the first extension element 102, and the first dispersing element 101 to rotate to the required angle. At this point, the fifth gripping element 184 is released, the second reset element 185 returns to its original shape, and the eighth locking element 183 is locked back into the seventh locking element 115. The locking is then checked. The angle of the fan-shaped area formed by the two first dispersing units 100 can be adjusted multiple times according to the above steps to meet the surgical requirements. Other usage methods are the same as in Embodiments 1 and 2.

[0234] The technical effects of this embodiment are as follows: The second locking unit is connected to the first spreading unit and detachably locked to the first mounting unit. By rotating the second locking unit, the corresponding first spreading units are rotated respectively, thereby making the two first spreading units form different angles. The area of ​​the two first spreading units can be flexibly adjusted according to different patients or the size of the surgical space to be established, which effectively solves the problem that existing surgical expansion devices cannot adjust the contact area with tissues according to different patients.

[0235] Example 4 This embodiment is a modified embodiment of embodiment 3.

[0236] like Figure 16As shown, the expansion device also includes two second expansion units 190. The two second expansion units 190 are respectively disposed on the side of the corresponding first expansion unit 100, and the second ends of the two second expansion units 190 are detachably disposed on the corresponding first angle adjustment unit 180 and located inside the second mounting unit 140, for use in conjunction with the two first expansion units 100 to expand the patient's abdominal wall upward during surgery.

[0237] In this embodiment, the lengths of the two second supporting units 190 are equal and less than the length of the first supporting unit 100.

[0238] Generally, the length of the second expansion unit 190 ranges from 7 to 10 cm.

[0239] like Figure 17 As shown, the first angle adjustment unit 180 further includes a third mounting element 186, a plurality of ninth locking elements 187, and a third limiting element 188. The third mounting element 186 is disposed on the side of the fixed structure of the first angle adjustment unit 180 and is used to mount the corresponding second opening unit 190. The plurality of ninth locking elements 187 are distributed on the third mounting element 186 and are detachably locked to the corresponding second opening unit 190, respectively, to lock the relative position of the corresponding second opening unit 190 and the first angle adjustment unit 180. The third limiting element 188 is disposed on the side of the third mounting element 186 and is limitedly connected to the corresponding second opening unit 190.

[0240] Specifically, the third mounting element 186 is disposed on the third base element 181; a plurality of ninth locking elements 187 are used to lock the relative position of the third base element 181 and the first angle adjustment unit 180.

[0241] Generally, the radial dimension (such as length and width) of the third mounting element 186 is smaller than the radial dimension (such as length and width) of the cross section of the third base element 181 to which it is located, and the height of the third mounting element 186 is smaller than the height of the third base element 181.

[0242] In some of these embodiments, the third mounting element 186 is a mounting slot.

[0243] Several ninth locking elements 187 are spaced apart along the length of the third mounting element 186.

[0244] The ninth locking element 187 and the third base element 181 are connected in a fixed manner. Generally, this includes, but is not limited to, integral molding.

[0245] Generally, the radial dimension (e.g., length, width) of the ninth locking element 187 is smaller than the radial dimension (e.g., length, width) of the third mounting element 186, and the height of the ninth locking element 187 is smaller than the height of the third mounting element 186.

[0246] In some of these embodiments, the ninth locking element 187 is the third locking block.

[0247] Generally, the radial dimension (such as outer diameter, length, and width) of the third limiting element 188 is smaller than the radial dimension (such as length and width) of the third base element 181 to which it is located.

[0248] Generally, the length of the third limiting element 188 is less than the length of the third mounting element 186, and the height of the third limiting element 188 is less than the height of the third mounting element 186.

[0249] In some of these embodiments, the radial dimension (e.g., outer diameter) of the cross-section of the third limiting element 188 increases and then decreases from the third mounting element 186 toward the fourth moving element 182.

[0250] In some of these embodiments, the third limiting element 188 is a limiting hole.

[0251] like Figure 18 As shown, the second opening unit 190 includes a second opening element 191, a third extension element 192, a plurality of tenth locking elements 193 and a fourth limiting element 194. The second spreading element 191 is arc-shaped and located on the side of the corresponding first spreading unit 100, used to work with the corresponding first spreading unit 100 to spread the patient's abdominal wall upwards during surgery; the third extension element 192 is located at the second end of the second spreading element 191, and the second end of the third extension element 192 is movably located inside the corresponding second mounting unit 140; a plurality of tenth locking elements 193 are distributed on the side of the second end of the third extension element 192 near the pressing unit 130, and are detachably locked to the corresponding first angle adjustment unit 180, used to lock the relative position of the third extension element 192 and the corresponding first angle adjustment unit 180; the fourth limiting element 194 is located on the side of the second spreading element 191 and on the side of the plurality of tenth locking elements 193, and is limitedly connected to the first angle adjustment unit 180, used to prevent the second spreading element 191 from separating from the first angle adjustment unit 180.

[0252] Specifically, the second spreading element 191 is disposed on the side of the corresponding first spreading element 101, and is used to cooperate with the first spreading element 101 to spread the patient's abdominal wall upward; the third extension element 192 is disposed on the side of the first extension element 102, and the second end of the third extension element 192 is disposed on the third mounting element 186; a plurality of tenth locking elements 193 are respectively detachably locked to the corresponding ninth locking elements 187; the fourth limiting element 194 is limited to the third limiting element 188, and is used to prevent the second spreading element 191 from separating from the third mounting element 186.

[0253] Generally, the height of the second supporting element 191 is equal to the height of the first supporting element 101, and the width of the second supporting element 191 can be equal to or different from that of the first supporting element 101.

[0254] In some of these embodiments, the arcuate angle of the second spreading element 191 ranges from 120° to 170°.

[0255] In some embodiments, the width of the second spreading element 191 ranges from 5 to 10 mm.

[0256] In some embodiments, the material of the second spreading element 191 includes, but is not limited to, plastic and metal.

[0257] In some of these embodiments, the second spreading element 191 is an arc-shaped support plate.

[0258] The connection between the third extension element 192 and the second expansion element 191 is a fixed connection, including but not limited to integral molding.

[0259] Generally, the width of the second supporting element 191 is not greater than the width of the third mounting element 186.

[0260] Generally, the radial dimension (such as outer diameter, length, and width) of the third extension element 192 is equal to the radial dimension (such as outer diameter, length, and width) of the second spreading element 191, and the length of the third extension element 192 is greater than the length of the second spreading element 191.

[0261] In some of these embodiments, the width of the third extension element 192 ranges from 5 to 10 mm.

[0262] In some embodiments, the material of the third extension element 192 includes, but is not limited to, metal and plastic.

[0263] In some of these embodiments, the third extension element 192 is a third extension rod or a third extension plate.

[0264] Generally, the length of the tenth locking element 193 is not less than the length of the ninth locking element 187, the width of the tenth locking element 193 is equal to the width of the ninth locking element 187, the height of the tenth locking element 193 is not less than the height of the ninth locking element 187, and the distance between two adjacent tenth locking elements 193 is equal to the distance between two adjacent ninth locking elements 187.

[0265] Generally, the length of the tenth locking element 193 is equal to the width of the third extension element 192, and the height of the tenth locking element 193 is less than the height of the third extension element 192.

[0266] Generally, the number of tenth locking elements 193 is equal to the number of ninth locking elements 187.

[0267] In some of these embodiments, the tenth locking element 193 is the fourth locking block.

[0268] The fourth limiting element 194 and the second spreading element 191 are connected by a fixed connection. Generally, this includes, but is not limited to, welding.

[0269] Generally, the length of the fourth limiting element 194 is greater than the length of the third limiting element 188, and the width of the fourth limiting element 194 is less than the width of the third limiting element 188.

[0270] Generally, the sum of the height of the fourth limiting element 194 and the height of the tenth locking element 193 is less than the height of the second opening element 191.

[0271] In some embodiments, the fourth limiting element 194 includes a first arc-shaped elastic sheet and a second arc-shaped elastic sheet. The first arc-shaped elastic sheet is disposed on the side of the second spreading element 191 and is located above the tenth locking element 193; the second arc-shaped elastic sheet is symmetrically disposed on the side of the first arc-shaped elastic sheet and is located above the tenth locking element 193.

[0272] In the relaxed state, i.e., the first and second arc-shaped elastic sheets are open, the height of the side of the first and second arc-shaped elastic sheets away from the second spreading element 191 is less than the height of the third limiting element 188, and the height of the highest point of the first and second arc-shaped elastic sheets is greater than the height of the third limiting element 188; when the first and second arc-shaped elastic sheets enter the third limiting element 188, they approach each other and can fully enter the third limiting element 188, and when the highest point of the first and second arc-shaped elastic sheets reaches the highest point of the third limiting element 188, they restore their deformation and open up to engage with the third limiting element 188.

[0273] The usage method of this embodiment is as follows: According to the surgical needs, when supporting the patient's upper abdominal wall, if a larger contact area is required, the fifth gripping element 184 can be pressed in the manner described in Example 3. The second reset element 185 undergoes compression deformation, causing the ninth locking element 187 to move away from the second chamber element 114. Then, the second end of the third extension element 192 is inserted into the first chamber element 112, and the corresponding third mounting element 186 is placed in. When the second end of the third extension element 192 abuts against the side wall of the third base element 181, the third extension element 192 is pressed down, and several ninth locking elements 187 respectively enter the corresponding tenth locking elements 193. Then, the second spreading element 191 slides to one side of the first spreading element 101, the fourth limiting element 194 enters the third limiting element 188, the fifth gripping element 184 is released, the second reset element 185 returns to its original deformation, the eighth locking element 183 is locked and connected to the seventh locking element, and the top end of the third extension element 192 abuts against the side wall of the second chamber element 114 near the first chamber element 112. This completes the fixing of the third extension element 192.

[0274] When the second opening unit 190 needs to be removed, press the fifth gripping element 184 in the same way to move the second opening element 191 away from the first opening element 101 until the fourth limiting element 194 and the third limiting element 188 separate. Then, lift the third extension element 192 upwards to separate the tenth locking element 193 and the ninth locking element 187. Finally, remove the third extension element 192. When adjusting the angle of the first opening element 101, the second opening element 191 can rotate with the first opening element 101 by the same angle. Other usage methods are the same as in Embodiment 3.

[0275] The technical effects of this embodiment are as follows: By using two second expansion units that are detachably locked to the first angle adjustment unit, the second expansion units can be installed or removed according to the needs of the surgery to increase or decrease the expansion area on the patient's upper abdominal wall, further solving the problem that existing surgical expansion devices cannot adjust the contact area with tissues according to different patients.

[0276] Example 5 This embodiment is a modified embodiment of Embodiments 1 to 4.

[0277] like Figure 19 As shown, the expansion device also includes two second angle adjustment units 200. The two second angle adjustment units 200 are movably disposed on corresponding second mounting units 140 and connected to the second end of corresponding pressing units 130, for adjusting the angle of the corresponding pressing units 130.

[0278] In some embodiments, the angle adjustment range of the second angle adjustment unit 200 is 5° to 40°.

[0279] like Figure 20 As shown, the second mounting unit 140 also includes a third chamber element 145 and an eleventh locking element 146. The third chamber element 145 extends through the first end of the second mounting unit 140, and a corresponding pressing unit 130 and a corresponding second angle adjustment unit 200 are movably disposed inside the third chamber element 145. The eleventh locking element 146 is disposed on the side of the second mounting unit 140 away from the corresponding first mounting unit 110, and is detachably locked to the corresponding second angle adjustment unit 200, for locking the relative position of the second mounting unit 140 and the corresponding second angle adjustment unit 200.

[0280] Specifically, the third chamber element 145 is disposed through the first end of the second mounting element 141; the second end of the corresponding second extension element 132 is movably disposed inside the third chamber element 145; and the tenth locking element 193 is disposed on the side of the second mounting element 141 away from the first mounting element 111.

[0281] Generally, the height of the third chamber element 145 is greater than the height of the second extension element 132, and the width of the third chamber element 145 is greater than the width of the second extension element 132.

[0282] Generally, the length of the third chamber element 145 is less than the length of the second mounting element 141, the width of the third chamber element 145 is less than the width of the second mounting element 141, and the height of the third chamber element 145 is less than the height of the second mounting element 141.

[0283] In some of these embodiments, the third chamber element 145 is a third active chamber.

[0284] The eleventh locking element 146 is connected to the second mounting element 141 in a fixed manner. Generally, this includes, but is not limited to, integral molding and welding.

[0285] Generally, the radial dimension (e.g., outer diameter) of the eleventh locking element 146 is smaller than the radial dimension (e.g., length, width) of the cross section of the second mounting element 141.

[0286] Generally, the radial dimension (e.g., inner diameter) of the eleventh locking element 146 is smaller than the radial dimension (e.g., length, width) of the third chamber element 145.

[0287] In some of these embodiments, the eleventh locking element 146 is a second locking nut.

[0288] like Figure 21As shown, the second angle adjustment unit 200 includes a twelfth locking element 201 and a sixth gripping element 202. The twelfth locking element 201 is movably disposed on the corresponding second mounting unit 140. One end of the twelfth locking element 201 is connected to the second end of the corresponding pressing unit 130 and is detachably locked to the corresponding second mounting unit 140, used to adjust the relative position of the pressing unit 130 and the corresponding second mounting unit 140. The sixth gripping element 202 is disposed at the other end of the twelfth locking element 201 and is located outside the second mounting unit 140, used for gripping.

[0289] Specifically, the twelfth locking element 201 is movably disposed in the third chamber element 145. One end of the twelfth locking element 201 is connected to the second end of the corresponding second extension element 132 and is detachably locked to the corresponding eleventh locking element 146 for adjusting the angle between the pressing element and the corresponding second mounting element 141; the sixth gripping element 202 is located outside the second mounting element 141.

[0290] Generally, the radial dimension (e.g., outer diameter) of the twelfth locking element 201 is equal to the radial dimension (e.g., inner diameter) of the eleventh locking element 146, and the height of the twelfth locking element 201 is greater than the sum of the heights of the eleventh locking element 146 and the second extension element 132.

[0291] In some of these embodiments, the twelfth locking element 201 is a second threaded rod.

[0292] The sixth gripping element 202 and the twelfth locking element 201 are connected in a fixed manner. Generally, this includes, but is not limited to, integral molding.

[0293] Generally, the radial dimension (e.g., outer diameter) of the sixth gripping element 202 is greater than the radial dimension (e.g., inner diameter) of the eleventh locking element 146.

[0294] In some embodiments, the sixth gripping element 202 includes a fourth limiting plate and a second screwing member. The fourth limiting plate is connected to the twelfth locking element 201; the first screwing member is disposed on the side of the fourth limiting plate and is used to screw when the twelfth locking element 201 is rotated.

[0295] The usage method of this embodiment is as follows: Depending on the size of the prostate volume of different patients, the method of Example 1 is used to place the first spreading unit 100 and the pressing unit 130 into the patient's abdominal cavity, and then the sixth gripping element 202 is turned, which simultaneously drives the twelfth locking element 201 and the pressing element to rotate. After reaching the required angle, the rotation is stopped, and the relative positions of the eleventh locking element 146 and the twelfth locking element 201 are locked.

[0296] Other usage methods are the same as in Examples 1, 2, 3 or 4.

[0297] The technical effects of this embodiment are as follows: by using two second angle adjustment units to drive the corresponding pressing units to rotate, and keeping them locked to the two second mounting units respectively, the opening angle of the first ends of the two pressing units can be adjusted according to the adaptability of different patients, which improves the flexibility of use and expands the scope of use.

[0298] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A dilation device for prostate surgery, characterized in that, include: Two first expansion units are arranged side by side, and the first end of the first expansion unit is arc-shaped, which is used to expand the patient's abdominal wall upward during surgery; Two first mounting units, the first ends of the two first mounting units are respectively connected to the second ends of the corresponding first supporting units, for mounting the corresponding first supporting units; A first gripping unit, wherein the first end of the first gripping unit is connected to the second ends of the two first mounting units respectively, and is set at an acute angle to the second ends of the two first mounting units respectively, for gripping; Two pressing units are arranged side by side on the side of the corresponding first spreading unit. The first end of the pressing unit is arc-shaped, and the arc direction of the pressing unit is the same as that of the first spreading unit. The first end of the pressing unit protrudes from the first end of the first spreading unit and is used to press down on the patient's prostate tissue during surgery. Two second mounting units are respectively located on the side of the corresponding first mounting unit, and the first ends of the two second mounting units are respectively connected to the second ends of the corresponding pressing units for mounting the corresponding pressing units; The second gripping unit is hinged to the first gripping unit. The first end of the second gripping unit is connected to the second end of the two second mounting units respectively, and is set at an obtuse angle to the second end of the two second mounting units respectively. It is used to cooperate with the first gripping unit to adjust the opening angle between the first end of the two first spreading units and the first end of the two pressing units. A first locking unit is movably disposed on the first gripping unit and the second gripping unit, and is used to lock the relative positions of the first gripping unit and the second gripping unit.

2. The expansion device according to claim 1, characterized in that, The first expansion unit includes: The first spreading element is disposed on the side of the corresponding pressing unit. The first spreading element is arc-shaped, and the arc direction of the first spreading element is the same as the arc direction of the pressing unit. It is used to spread the patient's abdominal wall upward during surgery. A first extension element, wherein a first end of the first extension element is connected to a second end of the first spreading element, and a second end of the first extension element is connected to a first end of the corresponding first mounting unit; and / or The first installation unit includes: A first mounting element is disposed on the side of the second mounting unit. A first end of the first mounting element is connected to a second end of the corresponding first spreading unit. The second end of the first mounting element is set at an acute angle to the first gripping unit, and is used to mount the corresponding first spreading unit; and / or The pressing unit includes: The pressing element is disposed on the side of the first spreading unit. The pressing element is arc-shaped, and the first end of the pressing element protrudes from the first end of the first spreading unit. The arc direction of the pressing element is the same as the arc direction of the first spreading unit, and it is used to press the patient's prostate tissue. A second extension element, wherein a first end of the second extension element is connected to a second end of the pressing element, and a second end of the second extension element is connected to a first end of the corresponding second mounting unit; and / or The second mounting unit includes: A second mounting element is disposed on the side of the corresponding first mounting unit. A first end of the second mounting element is connected to a second end of the corresponding pressing unit. The second mounting element is set at an obtuse angle to the second gripping unit and is used to mount the corresponding pressing unit; and / or The first gripping unit includes: A first arc-shaped plate element is disposed on the side of the second gripping unit, and the first end of the first arc-shaped plate element is connected to the second end of the two first mounting units respectively. A first gripping element is disposed at the second end of the first arc-shaped plate element and located on the side of the second gripping unit, and is set at an acute angle to the first mounting unit for gripping. Two first support elements are symmetrically arranged on both sides of the first arc-shaped plate element; Two first rotating elements are respectively disposed on the corresponding first supporting elements and are rotatably connected to the second gripping unit; A first movable element, which extends through the first gripping element, is used to set the first locking unit; and / or The second gripping unit includes: The second arc-shaped plate element is disposed on the side of the first gripping unit, and the first end of the second arc-shaped plate element is connected to the second end of the two second mounting units respectively. The second gripping element is disposed at the second end of the second arc-shaped plate element and located on the side of the first gripping unit, and is set at an obtuse angle with the second mounting unit for gripping; Two second support elements are symmetrically arranged on both sides of the second arc-shaped plate element and located on the side of the first gripping unit; Two second rotating elements are respectively disposed on the corresponding second support elements and are rotatably connected to the first gripping unit. A second movable element, which is disposed through the second gripping element, is used to set the first locking unit; A channel element, which is disposed through the second end of the second arcuate plate element and the first end of the second gripping element, is used to provide a passage for surgical instruments; and / or The first locking unit includes: A first locking element is movably disposed through the first gripping unit and the second gripping unit; A first limiting element is disposed at the first end of the first locking element and located on the side of the first gripping unit away from the second gripping unit, for preventing the first end of the first locking element from separating from the first gripping unit; The second limiting element is disposed at the second end of the first locking element and located on the side of the second gripping unit away from the first gripping unit, for preventing the first locking element from separating from the second gripping unit; The second locking element is sleeved on the first locking element and locked to the first locking element, and abuts against the first gripping unit or the second gripping unit, for locking the length of the first locking element between the first gripping unit and the second gripping unit; An operating element is disposed on the side of the second locking element and is used to rotate to cause the second locking element to move relative to the first locking element.

3. The expansion device according to claim 2, characterized in that, The first gripping unit further includes: A first anti-slip element is disposed on the side of the first grip element away from the second grip unit for anti-slip purposes; and / or The second gripping unit also includes: The second anti-slip element is disposed on the side of the second gripping element away from the first gripping unit, and is used for anti-slip.

4. The expansion device according to any one of claims 1 to 3, characterized in that, Also includes: Two second locking units are respectively disposed on the side of the first end of the second gripping unit away from the first gripping unit, and are respectively detachably locked to the corresponding second mounting unit; and / or Two first angle adjustment units are respectively movably disposed on the corresponding first mounting unit and connected to the second end of the corresponding first spreading unit, for adjusting the angle of the corresponding first spreading unit; and / or Two second angle adjustment units are respectively movably disposed on the corresponding second mounting unit and connected to the second end of the corresponding pressing unit, for adjusting the angle of the corresponding pressing unit.

5. The expansion device according to claim 4, characterized in that, The second mounting unit further includes: Two first sliding elements are symmetrically disposed at the second ends of the corresponding second mounting units and are slidably connected to the second gripping unit, respectively. A plurality of third locking elements are distributed on the side of the corresponding first sliding element away from the first gripping unit, and are respectively detachably locked to the corresponding second locking unit, for cooperating with the corresponding second locking unit to lock the relative position of the corresponding first sliding element and the second gripping unit; Two third gripping elements are respectively disposed at the second end of the corresponding first sliding element and respectively connected to the second gripping unit for gripping; and / or The second gripping unit also includes: A first base element is disposed on the side of the first end of the second gripping unit away from the first gripping unit; Two second sliding elements are respectively disposed through the first base element, and the two second sliding elements are not connected to each other. They are slidably connected to the corresponding second mounting unit to adjust the length of the corresponding second mounting unit; and / or The second locking unit includes: A second base element is movably disposed on the side of the first end of the second gripping unit away from the first gripping unit; A fifth locking element is disposed on the second base element and is detachably locked to the corresponding second mounting unit, for locking the relative position of the corresponding second mounting unit and the second gripping unit; A placement element is disposed on the second base element and located on the side of the fifth locking element, and abuts against the second gripping unit; A plurality of first reset elements are distributed inside the placement element, and the two ends of the plurality of first reset elements are respectively connected to the second gripping unit and the placement element for resetting; A fourth gripping element is disposed on the second base element for gripping.

6. The expansion device according to claim 5, characterized in that, The second gripping unit also includes: Two fourth locking elements are respectively disposed on the side of the first base element away from the first gripping unit, and are not connected to the corresponding second sliding element, and are respectively detachably locked to the corresponding second locking unit; and / or The second locking unit further includes: A sixth locking element is disposed on the second base element and located on the side of the placement element, and is detachably locked to the second gripping unit.

7. The expansion device according to claim 4, characterized in that, The first installation unit further includes: A first chamber element is disposed through the first end of the first mounting unit, and the first expansion unit and the first angle adjustment unit are movably disposed inside the first chamber element. The third movable element is disposed through the first mounting unit on the side away from the second mounting unit and communicates with the first chamber element. The first angle adjustment unit is movably disposed inside the third movable element. The second chamber element is disposed inside the first mounting unit and located on the side of the first chamber element, and communicates with the third movable element, for accommodating the locking structure of the first angle adjustment unit when the first angle adjustment unit is rotated; A seventh locking element, disposed on the side of the second chamber element and coaxially arranged with the second chamber element, and detachably locked to the first angle adjustment unit, is used to lock the relative position of the first angle adjustment unit and the first mounting unit; and / or The first angle adjustment unit includes: A third base element is movably disposed inside the corresponding first mounting unit and connected to the corresponding first spreading unit; A fourth movable element is disposed on the side of the third base element and passes through the corresponding first mounting unit, for driving the third base element to move; The eighth locking element is disposed in the fourth movable element and located inside the corresponding first mounting unit, and is detachably locked to the corresponding first mounting unit for locking the relative position of the third base element and the corresponding first mounting unit. A fifth gripping element is disposed at the end of the fourth movable element away from the third base element, and is used for gripping; The second reset element is sleeved on the fourth movable element and located outside the corresponding first mounting unit. The two ends of the second reset element abut against the corresponding first mounting unit and the fifth gripping element, respectively, for resetting.

8. The expansion device according to claim 4, characterized in that, Also includes: Two second expansion units are respectively disposed on the side of the corresponding first expansion unit. The second ends of the two second expansion units are detachably disposed on the corresponding first angle adjustment unit and located inside the corresponding second mounting unit, and are used to cooperate with the two first expansion units to expand the patient's abdominal wall upward during surgery.

9. The expansion device according to claim 8, characterized in that, The first angle adjustment unit further includes: The third mounting element is disposed on the side of the fixing structure of the first angle adjustment unit and is used to mount the corresponding second expansion unit; A plurality of ninth locking elements are distributed on the third mounting element and are respectively detachably locked to the corresponding second expansion unit, for locking the relative position of the corresponding second expansion unit and the first angle adjustment unit; A third limiting element is disposed on the side of the third mounting element and is limitedly connected to the corresponding second spreading unit; and / or The second expansion unit includes: The second expansion element is arc-shaped and disposed on the side of the corresponding first expansion unit, and is used to expand the patient's abdominal wall upward in conjunction with the corresponding first expansion unit during surgery; A third extension element is disposed at the second end of the second spreading element, and the second end of the third extension element is movably disposed inside the corresponding second mounting unit; A plurality of tenth locking elements are distributed on the side of the second end of the third extension element near the pressing unit, and are respectively detachably locked to the corresponding first angle adjustment unit for locking the relative position of the third extension element and the corresponding first angle adjustment unit. A fourth limiting element is disposed on the side of the second opening element and located on the side of a plurality of tenth locking elements, and is limitedly connected to the first angle adjustment unit to prevent the second opening element from separating from the first angle adjustment unit.

10. The expansion device according to claim 4, characterized in that, The second mounting unit further includes: A third chamber element is disposed through the first end of the second mounting unit, and a corresponding pressing unit and a corresponding second angle adjustment unit are movably disposed inside the third chamber element; An eleventh locking element is disposed on the side of the second mounting unit away from the corresponding first mounting unit and is detachably locked to the corresponding second angle adjustment unit, for locking the relative position of the second mounting unit and the corresponding second angle adjustment unit; and / or The second angle adjustment unit includes: The twelfth locking element is movably disposed on the corresponding second mounting unit. One end of the twelfth locking element is connected to the second end of the corresponding pressing unit and is detachably locked to the corresponding second mounting unit for adjusting the angle between the pressing unit and the corresponding second mounting unit. A sixth gripping element is disposed at the other end of the twelfth locking element and located outside the second mounting unit for gripping.

Images