Retractor device and medical apparatus

Abstract

The embodiment of the present application relates to the technical field of medical devices, and discloses a retractor and medical equipment, the retractor comprises a dilating piece and a guide piece, the dilating piece is provided with a dilating hole penetrating along a preset direction, the dilating piece is provided with a first end and a second end oppositely arranged along the preset direction; the guide piece is provided with a receiving hole extending along the preset direction, the guide piece is inserted into the dilating hole, and the guide piece at least partially extends out of the second end, and the part of the guide piece extending out of the second end can at least partially transmit light. In the above manner, an endoscope or a ventriculoscope can be received in the receiving hole and shoot images from the second end, which facilitates doctors to locate lesions, thereby reducing the movement of the retractor.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of medical devices, in particular to a retractor device and medical equipment. BACKGROUND

[0002] Intraventricular hemorrhage is a common acute severe disease of the nervous system. Among them, intraventricular hemorrhage casting is a common type of intraventricular hemorrhage, which is easy to cause acute severe hydrocephalus and has a high mortality rate, and needs to be treated by emergency hematoma removal surgery and unblocking of cerebrospinal fluid circulation path. For brain surgery, especially surgery in deep parts, the surgical field is narrow and deep, and doctors usually need to use retractors for assistance. The retractor is a kind of medical device that is used to obtain a surgical field and a surgical space by contacting with human body tissue during surgery. During surgery, these retractors are introduced into the brain tissue and then pulled to separate or elevate the brain tissue to facilitate surgery.

[0003] However, the inventors of the present application found in the implementation of the present application that the conventional retractor is used according to experience or guided by navigation or stereotactic guidance to reach the target point during use, and the puncture process is invisible. However, the brain tissue is soft and delicate, especially in the case of brain injury, ischemia or brain edema, the retractor is easy to directly compress the local brain tissue to cause contusion, and may also cause ischemia of the local brain tissue under the brain compression plate, and the complication of "retraction injury" may occur, and the movement of the retractor may aggravate the degree of brain retraction injury. SUMMARY

[0004] The technical problem solved by the embodiment of the present application is to provide a retractor device and medical equipment, which can install an endoscope or the like, so as to realize visual puncture and reduce the movement of the retractor.

[0005] To solve the above technical problem, one technical scheme adopted by the present application is to provide a retractor device for retracting human tissue, comprising a dilator and a guide, the dilator is provided with a dilator hole penetrating along a predetermined direction, and the dilator is provided with a first end and a second end arranged oppositely along the predetermined direction; the guide is provided with a receiving hole extending along the predetermined direction, the guide is inserted into the dilator hole, and the guide at least partially extends out of the second end, and the part of the guide extending out of the second end is at least partially transparent.

[0006] Optionally, the guide comprises a base body, the receiving hole is provided in the base body, and the base body is inserted into the dilator hole and partially extends out of the second end; and a guide sheath head is sleeved on the part of the base body extending out of the second end, and the guide sheath head is at least partially transparent.

[0007] Optionally, the sheath head is provided with a mounting hole penetrating through in the preset direction, the base body is inserted into the mounting hole, and the mounting hole is communicated with the receiving hole; the guide member comprises a lens, and the lens is embedded on a side of the mounting hole away from the base body.

[0008] Optionally, the retractor device comprises a mounting unit, and the mounting unit comprises a main body, the main body is mounted on the first end, and the base body is mounted on the main body.

[0009] Optionally, the main body comprises a columnar portion provided with a guide hole penetrating through in the preset direction, the base body is mounted on the columnar portion, and the guide hole is communicated with the receiving hole; the mounting unit comprises a clamping member, the columnar portion is provided with a first side and a second side oppositely arranged in the preset direction, the clamping member is embedded on the first side, and the clamping member is provided with a clamping portion extending into the guide hole.

[0010] Optionally, the base body is screwed on the columnar portion.

[0011] Optionally, one of the clamping member and the columnar portion is provided with a protrusion, and the other is provided with a groove, and the protrusion is received in the groove.

[0012] Optionally, the mounting unit further comprises a fixing member, the fixing member is sleeved on the first side, and the fixing member is bonded to the columnar portion.

[0013] Optionally, the main body comprises a mounting portion formed by the columnar portion extending outwardly; a mounting wall is formed on a side of the mounting portion away from the columnar portion and extending away from the first side in the preset direction, the mounting wall extends towards the columnar portion to form a positioning block; a resisting rib plate is formed on the mounting portion and extending away from the clamping member in the preset direction; a flange is formed on a side of the expanding member close to the first end and extending outwardly, and the flange is clamped between the positioning block and the resisting rib plate in the preset direction.

[0014] Optionally, one of a side of the flange close to the second end and a side of the positioning block close to the first side is provided with a positioning protrusion, and the other is provided with a positioning groove, and the positioning protrusion is clamped in the positioning groove.

[0015] Optionally, the flange is provided with a groove, and the positioning groove is matched with the positioning protrusion in a direction perpendicular to the preset direction.

[0016] Optionally, the expanding member is provided with a handle at the second end.

[0017] Optionally, a profile of the expanding member gradually decreases from the first end to the second end in the preset direction.

[0018] Optionally, the outer side of the expansion member is provided with a scale arranged along a preset direction.

[0019] According to another aspect of the embodiments of the present application, a medical device is provided, which comprises the retractor described above.

[0020] The beneficial effects of the embodiments of the present application are that, different from the prior art, the guide member of the embodiments of the present application is provided with a receiving hole, and the part of the guide member extending out of the second end is at least partially transparent, the endoscope or the ventriculoscope can be received in the receiving hole and take images from the second end, which is convenient for doctors to locate the lesion, thereby reducing the movement of the retractor. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by the drawings without creative labor.

[0022] Figure 1 is a perspective view of the retractor of the embodiments of the present application;

[0023] Figure 2 is an exploded view of the retractor of the embodiments of the present application;

[0024] Figure 3 is a perspective view of the retractor of the embodiments of the present application, which is installed with an electronic camera device;

[0025] Figure 4 is Figure 3 is a sectional view along the line A-A;

[0026] Figure 5 is a perspective view of the expansion member of the embodiments of the present application;

[0027] Figure 6 is an exploded view of the guide member of the embodiments of the present application;

[0028] Figure 7 is a perspective view of the lens of the embodiments of the present application;

[0029] Figure 8 is an exploded view of the mounting unit of the embodiments of the present application;

[0030] Figure 9 is Figure 2 is a sectional view along the line B-B. DETAILED DESCRIPTION

[0031] For the convenience of understanding the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "vertical", "horizontal", "left", "right", and similar expressions used in the present specification are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used in the present specification are intended to have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the present specification are only for the purpose of describing specific embodiments of the present application and are not intended to limit the present application. The term "and / or" used in the present specification includes any and all combinations of one or more of the associated listed items.

[0033] A retractor 1 for retracting human tissue, please refer to Figures 1 to 4 , Figure 1 and Figure 2 The three-dimensional schematic view and exploded view of the retractor of the embodiments of the present application are shown, Figure 3 The three-dimensional schematic view of the retractor of the embodiments of the present application is shown, Figure 4 The three-dimensional schematic view of the retractor of the embodiments of the present application is shown, Figure 3 The cross-sectional view along the line A-A. The retractor 1 comprises a dilator 100 and a guide 200. The dilator 100 is provided with a dilator hole 101 extending along a predetermined direction X, and the dilator 100 is provided with a first end 102 and a second end 103 oppositely arranged along the predetermined direction X. The guide 200 is provided with a receiving hole 201 extending along the predetermined direction X, the guide 200 is inserted into the dilator hole 101, and the guide 200 at least partially extends out of the second end 103, and the portion of the guide 200 extending out of the second end 103 is at least partially transparent.

[0034] For the above-mentioned dilator 100, please refer to Figure 5 , Figure 5 The three-dimensional schematic view of the dilator of the embodiments of the present application is shown, and in conjunction with Figures 1 to 4The material of the dilating member 100 is plastic, such as polyethylene, polypropylene, etc. The dilating member 100 is frustoconical and extends along the preset direction X, and is provided with a first end 102 and a second end 103 oppositely arranged along the preset direction X. The dilating member 100 gradually decreases in profile from the first end 102 to the second end 103 along the preset direction X. The dilating member 100 is provided with a dilating hole 101 penetrating along the preset direction X. The dilating hole 101 is frustoconical and is adapted to the dilating member 100, and is used for accommodating the guide member 200. The first end 102 is used for extending into the human body, and the second end 103 is used for operation by the doctor during the operation. It should be noted that the specific shape of the dilating member 100 and the dilating hole 101 is not limited in the present application. In the present application, the dilating member 100 is designed to be frustoconical, which facilitates the doctor to extend the smaller first end 102 into the human body. With the extension of the dilating member 100, the dilating member 100 can retract the human tissue and play a role in expanding the operation channel. The circular cross section of the dilating member 100 reduces the corners and thus reduces the impact of the dilating member 100 on the human tissue when extending into the human body. However, the specific shape of the dilating member 100 is not limited in the present application. In other embodiments of the present application, the dilating member 100 can be prismatic, cylindrical or prismatic, etc. In the present embodiment, the material of the dilating member 100 is plastic, which is used to keep the wall thickness of the dilating member 100 consistent. The shape of the dilating hole 101 is adapted to the dilating member 100. However, the specific shape of the dilating hole 101 is not limited in the present application. In other embodiments of the present application, the dilating hole 101 can not be adapted to the dilating member 100, and can be prismatic, cylindrical or prismatic, etc. It should be further noted that, in order to be more hygienic and safe, the retractor 1 of the present embodiment is a disposable product. The material of the dilating member 100 is plastic, which can reduce the production cost of the retractor 1. The material of the dilating member 100 is relatively soft, which can cause less damage to the human tissue when retracting the human tissue. However, the specific material of the dilating member 100 is not limited in the present application. In other embodiments of the present application, the material of the dilating member 100 can also be metal, ceramic, etc.It should be understood that the present application does not limit the profile contraction degree of the expansion member 100 and the diameter of the expansion member 100 at the first end 102 and the second end 103 in the preset direction X from the first end 102 to the second end 103, and the electronic camera equipment 2 is selected as a viewing mirror such as an endoscope for a larger lesion such as a brain hemorrhage or a brain hematoma removal operation, and the profile contraction degree of the expansion member 100 and the diameter of the expansion member 100 at the first end 102 and the second end 103 are relatively large, so as to facilitate the retraction of more human components, facilitate the exposure of the lesion, and facilitate the operation; for minimally invasive surgery, the electronic camera equipment 2 is selected as a ventricle mirror or other electronic camera equipment 2 with a surgical channel, and the profile contraction degree of the expansion member 100 and the diameter of the expansion member 100 at the first end 102 and the second end 103 are relatively small, so that the expansion hole 101 can accommodate the electronic camera equipment 2, wherein the "relatively large" and "relatively small" of the contraction degree and the diameter in the above description are for comparison of the expansion member 100 in the two types of electronic camera equipment 2.

[0035] Preferably, the expansion member 100 is provided with a handle 110 at the second end 103, the handle 110 includes a hand holding portion 111, a connecting portion 112 and a fixed portion 113 connected in sequence, the handle 110 is in the shape of "Z" with an obtuse angle, the hand holding portion 111 and the fixed portion 113 extend perpendicular to the preset direction X, the fixed portion 113 is fixed to the second end 103 of the expansion member 100, and the connecting portion 112 extends away from the first end 102, so that in the preset direction X, the projection of the hand holding portion 111 and the projection of the main body 310 of the expansion member 100 do not overlap, thereby facilitating the doctor to hold the handle 110 at a position relatively far away from the second end 103 during operation. A rib plate is arranged at the connection between the hand holding portion 111 and the connecting portion 112, thereby enhancing the strength of the handle 110. A matrix of cylindrical anti-skid grooves 111a is arranged on the side of the hand holding portion 111 away from the connecting portion 112, thereby increasing the friction between the hand and the hand holding portion 111 and reducing the probability of slipping when holding the handle 110. It should be noted that in the embodiment of the present application, the material of the expansion member 100 is plastic and is directly injection molded, and in order to reduce the mounting steps between parts, the handle 110 is integrally formed with the expansion member 100, but it should be understood that in other embodiments of the present application, the handle 110 can be separately arranged from the expansion member 100, and the handle 110 is mounted on the expansion member 100 by clamping or screwing or the like. It should be further noted that the present application does not limit the specific shape of the handle 110, for example, in other embodiments of the present application, the handle 110 can also be a rod perpendicular to the preset direction X, which is convenient to hold during operation.

[0036] Preferably, the outer side of the expansion member 100 is provided with a scale (not shown) arranged in the preset direction X, thereby facilitating the doctor to judge the depth of the retraction device 1 inserted into the human body.

[0037] For the above guide 200, please refer to Figure 6 , Figure 6 The exploded view of the guide of the embodiment of the application is shown, and in combination with Figures 1 to 4 The guide 200 includes a base body 210 and a guide sheath head 220, the base body 210 is a cylindrical tubular structure extending along the preset direction X, the base body 210 is provided with a cylindrical receiving hole 201 extending along the preset direction X, the receiving hole 201 is used for accommodating electronic camera equipment 2 such as endoscopes and ventriculoscopes, and the base body 210 is inserted into the expansion hole 101 and partially extends out of the second end 103. The guide sheath head 220 includes a rod body part 221 and an extension part 222, the rod body part 221 is a cylindrical rod structure extending along the preset direction X, the rod body part 221 is provided with a mounting hole 221a extending along the preset direction X, the mounting hole 221a is used for sleeving the second end 103 of the base body 210, and the mounting hole 221a is in communication with the receiving hole 201. Since the mounting hole 221a can transmit light, the electronic camera equipment 2 can shoot the image of the second end 103 through the mounting hole 221a. The extension part 222 is formed outwardly on the side of the rod body part 221 away from the base body 210 and is arranged around the rod body part 221, the connection between the extension part 222 and the rod body part 221 is in a hemispherical shell shape, the part of the extension part 222 away from the connection between the extension part 222 and the rod body part 221 is a circular ring rod body extending along the preset direction X, and a reinforcing rib is arranged between the rod body part 221 and the extension part 222, thereby strengthening the strength of the guide sheath head 220. It should be noted that the specific shape of the base body 210 and the guide sheath head 220 is not limited in the application, in other embodiments of the application, the base body 210 can also be a prism, a prism table or a circular table, so that the base body 210 can be accommodated in the expansion hole 101 and can extend out of the second end 103 of the expansion member 100, and the guide sheath head 220 can also be a prism, a prism table or a circular table, so as to realize the accommodation of the electronic camera equipment 2; the extension part 222 of the guide sheath head 220 is designed in a hemispherical shape to facilitate the guide sheath head 220 to pierce the human tissue and reduce the damage to the human tissue during the piercing process, but in other embodiments of the application, the guide sheath head 220 can not be provided with the extension part 222, and the rod body part 221 can directly realize the piercing, and the rod body part 221 can be a prism, a prism table or a circular table, and the mounting hole 221a can not be adapted to the base body 210, and can be a prism, a prism table or a circular table, so that the mounting hole 221a is used for sleeving the second end 103 of the base body 210, and the mounting hole 221a is in communication with the receiving hole 201.

[0038] Preferably, the guide 200 includes a lens 230, please refer to Figure 7 , Figure 7 The perspective view of the lens of the embodiment of the application is shown, and in combination with Figure 6The lens 230 is in a cylindrical shape extending along the preset direction X and is adapted to the mounting hole 221a. The lens 230 is embedded in the accommodation hole 201 for the side of the second end 103 to extend. The lens 230 is provided with a bearing part 231 at one end of the base body 210. The bearing part 231 is in a cylindrical shape extending along the preset direction X. The bearing part 231 is perpendicular to the preset direction X and is provided with a spherical surface at one end of the base body 210. The bearing part 231 bears against the base body 210 along the preset direction X, so that the lens 230 is embedded in the guide member 200 and cannot completely slide into the accommodation hole 201. The lens 230 blocks the part of the base body 210 extending from the second end 103, so that the part of the accommodation hole 201 extending from the second end 103 is relatively closed. The lens 230 can transmit light, so that the electronic camera device 2 can be used for shooting while being isolated from the human tissue, thereby protecting the electronic camera device 2. In this way, the electronic camera device 2 can be prevented from being directly contacted with the human tissue and being damaged by external force when the electronic camera device 2 is used for following the dilator 100 to retract the human tissue. It should be noted that the bearing part 231 is provided with a spherical surface at one end of the base body 210 perpendicular to the preset direction X. In this way, the puncture of the guide sheath head 220 is facilitated. However, the specific shape of the lens 230 is not limited in the application. In other embodiments of the application, the bearing part 231 is provided with a plane at one end of the base body 210 perpendicular to the preset direction X. In addition, the lens 230 can be in a prism, a prism table or a circular table, and the like, so as to block the part of the accommodation hole 201 extending from the second end 103.

[0039] Preferably, the guide sheath head 220 is bonded to the base body 210. Specifically, the mounting hole 221a is bonded to the base body 210 and the side wall of the bearing part 231 perpendicular to the preset direction X. In this way, the lens 230 is provided with a spherical surface extending from the guide sheath head 220. The guide sheath head 220 is bonded to the base body 210, so as to further strengthen the fixation among the base body 210, the guide sheath head 220 and the lens 230, thereby reducing the probability of dislocation or scattering of the guide member 200 during the puncture process.

[0040] In order to achieve the fixed installation between the guide member 200 and the dilator 100, the retractor 1 comprises a mounting unit 300. Please refer to Figure 8 and Figure 9 , Figure 8 FIG. 8 shows an exploded view of the mounting unit according to an embodiment of the application, Figure 9 FIG. 9 shows a sectional view along the line B-B, and Figure 2 Figures 1 to 4 ​The mounting unit 300 comprises a main body 310, the main body 310 comprises a columnar portion 311 and a mounting portion 312 extending outwardly from the columnar portion 311, the guide member 200 is mounted on the columnar portion 311, and the mounting portion 312 is mounted on the first end 102 of the expansion member 100. Next, the mounting between the guide member 200 and the expansion member 100 and the main body 310 will be described from the structures of the columnar portion 311 and the mounting portion 312 respectively.

[0041] For the columnar portion 311, the columnar portion 311 is in a cylindrical shape extending along the preset direction X, the columnar portion 311 is provided with a guide hole 311a penetrating through along the preset direction X, the guide hole 311a is in a cylindrical shape extending along the preset direction X as a whole, and the guide hole 311a is provided with a guide protrusion 311a1 in a circular ring shape at about one-half of the preset direction X. The columnar portion 311 is provided with a first side 311b and a second side 311c oppositely arranged along the preset direction X, and the guide protrusion 311a1 is provided with a chamfer close to the first side 311b. The guide hole 311a is provided with a thread 311a2 close to the second side 311c, and the outer side wall of the base body 210 is provided with a threaded flange 211 on the side away from the guide sheath head 220, the threaded flange 211 is screwed on the thread 311a2, so as to realize the mounting of the guide member 200 on the columnar portion 311, at this time, the guide hole 311a and the accommodation hole 201 are communicated and the center axes are on the same straight line. It should be noted that the specific shape of the columnar portion 311 and the guide hole 311a is not limited in the present application, in other embodiments of the present application, the columnar portion 311 and the guide hole 311a can also be in a prism, prism or circular table shape, so that the guide hole 311a can accommodate the electronic imaging device 2. It should be noted that the specific mounting method of the base body 210 on the columnar portion 311 is not limited in the present application, in another embodiment of the present application, the thread 311a2 can also be provided on the outer side wall of the columnar portion 311, the threaded flange 211 can be provided on the side of the accommodation hole 201 away from the guide sheath head 220, the threaded flange 211 is screwed on the thread 311a2, so as to screw the base body 210 on the columnar portion 311, and in other embodiments of the present application, the base body 210 can also be fixed to the columnar portion 311 by clamping or inserting, so as to communicate the guide hole 311a and the accommodation hole 201, and to accommodate the electronic imaging device 2 together.

[0042] For the mounting portion 312, the mounting portion 312 is formed by extending outwardly from the outer side wall of the columnar portion 311, the mounting portion 312 is a circular ring plate structure perpendicular to the preset direction X, the mounting portion 312 extends away from the columnar portion 311 on the side away from the first side 311b along the preset direction X to form a circular ring mounting wall 312a, the mounting wall 312a extends towards the columnar portion 311 to form a rectangular block 312a1, and the mounting portion 312 extends away from the first side 311b along the preset direction X to form a circular ring-shaped abutting rib plate 312b. A rib plate is provided between the columnar portion 311, the abutting rib plate 312b, and the mounting wall 312a to strengthen the strength of the main body 310. Among them, the inner diameter of the abutting rib plate 312b is smaller than the diameter of the second end 103 of the expansion hole 101 perpendicular to the preset direction X. The outer side wall of the expansion piece 100 extends outwardly to form a flange 120 on the side close to the first end 102, the flange 120 is a circular ring, and the handle 110 is arranged on the flange 120. In the preset direction X, the distance between the side of the positioning block 312a1 close to the mounting portion 312 and the mounting portion 312 is a first distance, the extension length of the abutting rib plate 312b is a second distance, and the projection length of the flange 120 is a third distance. The first distance minus the second distance is equal to the third distance, that is, the flange 120 is clamped between the positioning block 312a1 and the abutting rib plate 312b in the preset direction X, thereby achieving the clamping and fixing of the mounting portion 312 and the expansion piece 100 in the preset direction X. Further, the side of the positioning block 312a1 close to the mounting portion 312 is provided with a hemispherical positioning groove 312a11, and the side of the flange 120 close to the second end 103 is provided with a positioning protrusion 121 matched with the positioning groove 312a11. The positioning protrusion 121 is clamped in the positioning groove 312a11, thereby preventing the mounting portion 312 and the expansion piece 100 from rotating in the plane perpendicular to the preset direction X, thereby achieving the fixed mounting of the mounting portion 312 and the expansion piece 100. It should be noted that the specific shape of the mounting portion 312, the abutting rib plate 312b, the mounting wall 312a, and the positioning block 312a1 is not limited in the present application. In other embodiments of the present application, the mounting portion 312 can also be a polygonal plate structure formed by extending the columnar portion 311; the abutting rib plate 312b, the mounting wall 312a, and the positioning block 312a1 can also be in the shape of a fan ring, a prism, a prism, etc., to achieve the positioning of the positioning block 312a1 in the main body 310 and to meet the distance requirements between the positioning block 312a1 and the mounting wall 312a and the mounting portion 312, that is, to meet the clamping of the flange 120 between the positioning block 312a1 and the abutting rib plate 312b in the preset direction X.

[0043] Preferably, the number of positioning blocks 312a1 is three, and the three positioning blocks 312a1 are arranged in a circumferential array on the mounting wall 312a, which helps to increase the clamping area of the main body 310 and the flange 120, and prevent the main body 310 and the flange 120 from being affected by the unbalanced force in the case of only one contact point, so as to affect the installation of the main body 310 on the expansion element 100. Among them, only one of the three positioning blocks 312a1 is provided with a positioning groove 312a11, so as to realize the positioning of the main body 310 on the expansion element 100 in the direction perpendicular to the preset direction X. It should be noted that the number of positioning blocks 312a1 is not limited in the present application, and in other embodiments of the present application, the number of positioning blocks 312a1 can be two, five, etc., and a plurality of positioning blocks 312a1 are arranged in a circumferential array on the mounting wall 312a. It should be understood that in the embodiments of the present application, the mounting wall 312a is a circular ring, and therefore a plurality of positioning blocks 312a1 are arranged in a circumferential array on the mounting wall 312a, but in other embodiments, when the mounting portion 312 is a cylindrical portion 311 extending to form a polygonal plate structure, a plurality of positioning blocks 312a1 are arranged in a circumferential array around the outer contour of the mounting portion 312.

[0044] Preferably, the flange 120 is provided with through grooves 122, and the positioning grooves are matched with the positioning protrusions 121 in the direction perpendicular to the preset direction X. The number of through grooves 122 is three, and the three through grooves 122 are arranged on the flange 120 corresponding to the three positioning protrusions 121. The through grooves 122 are used for installing the positioning blocks 312a1 on the expansion element 100 from the first end 102 to the direction close to the second end 103, so that the flange 120 can be installed between the positioning blocks 312a1 and the resisting rib plate 312b by rotating and being out of position.

[0045] Preferably, the mounting wall 312a is provided with an opening groove 312a2, which is arranged on the mounting wall 312a and avoids the positioning blocks 312a1. In the direction perpendicular to the preset direction X, the opening groove 312a2 is used for abutting against the handle 110, so as to reduce the rotation angle of the main body 310 when it is installed on the expansion element 100, and then facilitate the clamping installation of the positioning groove 312a11 and the positioning protrusion 121.

[0046] Preferably, the mounting wall 312a is provided with anti-skid grooves 111a, which are located on the outer side wall of the mounting wall 312a in the direction perpendicular to the preset direction X. The number of anti-skid grooves 111a is a plurality, and the plurality of anti-skid grooves 111a are distributed in a circumferential direction of the mounting wall 312a and arranged away from the position of the opening groove 312a2. The arrangement of the anti-skid grooves 111a can increase the friction between the hand and the main body 310, so as to facilitate the installation of the main body 310 on the expansion element 100.

[0047] Preferably, in order to facilitate the relative fixation of the electronic camera device 2 on the retractor 1, the mounting unit 300 comprises a clamping member 320, which is in the shape of a circular column extending along the preset direction X, and is embedded in the first side 311b of the columnar portion 311. The clamping member 320 is provided with a clamping portion 321 extending into the guide hole 311a. The clamping portion 321 comprises an extending end 321a extending along the preset direction X inside the circular ring and a clamping end 321b arranged at a certain angle with the preset direction X. The extending end 321a and the clamping end 321b are connected, the clamping end 321b is in the shape of a circular column, and the clamping end 321b is in the shape of a circular frustum side wall with a thin wall structure. In the preset direction X, the profile of the clamping end 321b is reduced from the side where the clamping end 321b is connected to the extending end 321a to the side where the clamping end 321b is away from the extending end 321a. Specifically, the clamping member 320 is provided with a circular ring-shaped groove 322 extending along the preset direction X. The columnar portion 311 is provided with a protrusion 311d on the side away from the mounting wall 312a. The protrusion 311d is in the shape of a circular ring extending along the preset direction X and is adapted to the groove 322. The protrusion 311d is accommodated in the groove 322, so that the clamping member 320 is embedded in the columnar portion 311. The material of the clamping member 320 is a plastic with elasticity. The electronic camera device 2 is inserted into the clamping portion 321, and the clamping portion 321 is tightly fitted with the electronic camera device 2, so that the electronic camera device 2 is fixed on the retractor 1. It should be noted that the specific shape of the protrusion 311d and the groove 322 is not limited in the present application. In other embodiments of the present application, the protrusion 311d and the groove 322 can also be in the shape of a fan ring or a prism, etc., so that the clamping member 320 is embedded in the columnar portion 311. It should be further noted that the specific structure of the clamping member is not limited in the present application. For example, in some embodiments of the present application, the clamping portion 321 can be a clamping arm extending into the guide hole 311a, so as to clamp the electronic camera device 2.

[0048] Preferably, the mounting unit 300 further comprises a fixing member 330, which is sleeved on the first side 311b of the columnar portion 311 and is bonded to the columnar portion 311, so as to resist and fix the clamping member 320 on the columnar portion 311. The fixing member 330 is used to further strengthen the installation of the clamping member 320 on the columnar portion 311 and prevent the clamping member 320 from loosening when embedded in the columnar portion 311.

[0049] The assembly process of the retractor 1 will be briefly described below in combination with the drawings.

[0050] 1. Embed the lens in the accommodation hole 201, and insert and bond the guide sheath head 220 to the base 210.

[0051] 2, the clamping piece 320 is embedded in the first side 311b of the column body 311, and then the fixing piece 330 is sleeved and bonded on the first side 311b;

[0052] 3, the guide piece 200 is screwed on the second side 311c of the column body 311;

[0053] 4, the main body 310 is rotatably installed on the expansion piece 100;

[0054] It should be noted that the order of the above assembly process can be changed without affecting the normal use of the retractor 1.

[0055] The operation process of the retractor 1 will be briefly described below in combination with the drawings.

[0056] 1, when the electronic camera equipment 2 is a viewing mirror such as an endoscope:

[0057] (1), the electronic camera equipment 2 is sequentially inserted into the guide hole 311a and the accommodation hole 201 from the first end 102, so that the electronic camera equipment 2 is arranged close to the lens 230;

[0058] (2), the retractor 1 is inserted into the incision previously made in the human body, and the human tissue is retracted;

[0059] (3), the retractor 1 is moved to locate the lesion through the electronic camera equipment 2;

[0060] (4), the electronic camera equipment 2 is moved out of the retractor 1, and the installation unit 300 is removed from the expansion piece 100;

[0061] (5), the surgical equipment is inserted into the expansion hole 101 to perform surgery;

[0062] (6), after the surgery is completed, the surgical equipment is removed first, and then the expansion piece 100 is taken out of the human body.

[0063] 2, when the electronic camera equipment 2 is an electronic camera equipment 2 with a surgical channel such as a ventriculoscope:

[0064] (1), the electronic camera equipment 2 is sequentially inserted into the guide hole 311a and the accommodation hole 201 from the first end 102, so that the electronic camera equipment 2 is arranged close to the lens 230;

[0065] (2), the retractor 1 is inserted into the incision previously made in the human body, and the human tissue is retracted;

[0066] (3), the retractor 1 is moved to locate the lesion through the electronic camera equipment 2;

[0067] (4), the electronic camera equipment 2 is moved out of the retractor 1, and the installation unit 300 is removed from the expansion piece 100;

[0068] (5), the guide 200 is removed from the mounting unit 300;

[0069] (6), the mounting unit 300 is mounted again to the expansion hole 101;

[0070] (7), the electronic camera device 2 is inserted into the expansion hole 101, and the surgical instrument is inserted into the electronic camera device 2, and the surgery is performed;

[0071] (8), after the surgery is completed, the surgical instrument is removed from the electronic camera device 2, the electronic camera device 2 is removed from the expansion hole 101, and finally the expansion hole 101 is removed from the human body.

[0072] Unlike the prior art, the guide 200 of the embodiment of the application is provided with a receiving hole 201, and the part of the guide 200 extending out of the second end 103 is at least partially transparent, and the electronic camera device 2 such as an endoscope or a ventriculoscope can be received in the receiving hole 201 and take images from the second end 103, so that the entire surgical process can be visualized, which facilitates the doctor to locate the lesion, thereby reducing the movement of the retractor 1, and further reducing the damage to the human tissue during the puncture process, and also facilitating the postoperative recovery of the patient.

[0073] Based on the same inventive concept, the application further provides a medical device comprising the above-mentioned retractor 1. Since the above-mentioned retractor 1 is included, the medical device can also realize visual puncture.

[0074] It should be noted that the specification and drawings of the application provide a preferred embodiment of the application, but the application can be implemented in many different forms, and is not limited to the embodiments described in the specification. These embodiments are not additional limitations on the content of the application, and the purpose of providing these embodiments is to make the disclosure of the application more thorough and comprehensive. Furthermore, the above technical features continue to be combined with each other, forming various embodiments not listed above, which are considered to be within the scope of the application. Furthermore, for those skilled in the art, the above description can be improved or changed, and all these improvements and changes should be within the scope of the claims of the application.

Claims

1. A retraction device for retracting human tissue, characterized in that, include: An expansion member is provided with an expansion hole that extends in a preset direction, and the expansion member is provided with a first end and a second end that are arranged opposite to each other in the preset direction; as well as A guide member is provided with a receiving hole extending along the preset direction. The guide member is inserted into the expansion hole, and at least part of the guide member extends out of the second end. The guide member includes a base, a guide sheath head, and a lens. The receiving hole is provided through the base, and the base is inserted into the expansion hole and partially extends out of the second end. The guide sheath head is sleeved on the portion of the base extending out of the second end. The guide sheath head is provided with a mounting hole extending along the preset direction. The base is partially inserted into the mounting hole, and the mounting hole communicates with the receiving hole. The lens is embedded in the mounting hole on the side away from the base, so that at least part of the portion of the guide member extending out of the second end can transmit light. The end of the lens exposed on the base is provided with a supporting portion, which supports the base in the preset direction. The end of the supporting portion exposed on the base perpendicular to the preset direction is spherical.

2. The retraction device according to claim 1, characterized in that, The pulling device includes an installation unit, which includes a main body. The main body is installed at the first end, and the base is installed on the main body.

3. The pulling device according to claim 2, characterized in that, The main body includes a columnar portion, the columnar portion having a guide hole extending through in a preset direction, the base being mounted on the columnar portion, and the guide hole and the receiving hole being connected; The installation unit includes a clamping member. The column portion has a first side and a second side arranged opposite to each other along a preset direction. The clamping member is embedded in the first side and has a clamping part that extends into the guide hole.

4. The pulling device according to claim 3, characterized in that, The base is screwed to the cylindrical part.

5. The pulling device according to claim 3, characterized in that, One of the clamping member and the column portion has a protrusion, and the other has a groove, with the protrusion being received in the groove.

6. The pulling device according to claim 3, characterized in that, The installation unit further includes a fastener, which is sleeved on the first side and adhered to the column portion.

7. The pulling device according to claim 3, characterized in that, The main body includes a mounting portion formed by extending the column portion outward; The mounting portion extends away from the column portion on one side along the preset direction away from the first side to form a mounting wall, and the mounting wall extends toward the column portion to form a positioning block; The mounting portion extends away from the clamping member along the preset direction to form a support rib; The expansion member extends outward into a flange on the side near the first end, and the flange is engaged between the positioning block and the supporting rib in a preset direction.

8. The pulling device according to claim 7, characterized in that, The flange near the second end and the positioning block near the first end each have a positioning protrusion and a positioning groove, respectively, with the positioning protrusion engaging with the positioning groove.

9. The pulling device according to claim 7, characterized in that, The flange is provided with a through groove, which is adapted to the positioning block in a direction perpendicular to the preset direction.

10. The pulling device according to any one of claims 1-9, characterized in that, The expansion member has a handle at its first end.

11. The retraction device according to claim 10, characterized in that, The outline of the expansion member gradually decreases as it points from the first end to the second end along a preset direction.

12. The pulling device according to claim 10, characterized in that, The outer side of the expansion member is provided with a scale set along a preset direction.

13. A medical device, characterized in that, Includes the pulling device as described in any one of claims 1-12.

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