Puncture cone mechanism for disposable laparoscope

Abstract

The utility model provides a puncture cone mechanism for a disposable laparoscope, which relates to the technical field of medical instruments and comprises a puncture cone cover, a puncture cone handle, a tension spring, a sliding rod, a puncture ejector rod, a puncture cone sleeve and a puncture cone head. The puncture cone handle is movably connected to the puncture cone cover; a sliding cavity is formed in the puncture cone handle, the sliding rod is vertically connected into the sliding cavity in a sliding mode, the tension spring is arranged in the sliding cavity, a deformation notch is formed in the top of the sliding rod, and two deformation rods are formed in the top of the sliding rod. A first limiting part and a second limiting part are respectively arranged on the puncture cone handle; the puncture ejector rod is mounted at the bottom of the sliding rod; the puncture cone sleeve is sleeved on the puncture cone handle, and the puncture cone head is arranged on the puncture cone sleeve. The puncture awl has the advantages that the puncture awl handle is matched with the sliding rod through the tension spring, the sliding rod is matched with the first limiting part and the second limiting part in a limiting mode, it can be guaranteed that the sliding rod is accurately positioned, and accuracy and stability in the puncture process are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, specifically, relate to the puncture cone mechanism for disposable laparoscope. BACKGROUND

[0002] As one of the main treatment means of minimally invasive surgery, endoscopic surgery and thoracoscopic surgery have been widely used because of small trauma and fast recovery. In minimally invasive laparoscopic surgery, if surgery or resection is needed in the human body, the abdominal cavity of the human body needs to be inflated during the operation process. The establishment of pneumoperitoneum is an important operation process of the surgery. Under the condition of sufficient pneumoperitoneum, the distance between the abdominal cavity and the organs is increased, and the surgical field is expanded. Endoscopic surgery needs to open a hole in the patient's abdomen and perform surgery under laparoscopic observation. After the surgery, it is often difficult to suture the fascia layer, leading to the occurrence of pneumatocele and affecting the patient's recovery.

[0003] The existing puncture cone mechanism, such as the puncture cone assembly named in Chinese utility model patent (publication number CN211723354U), can not only achieve the puncture of the abdominal cavity under the laparoscope, but also can achieve the suturing of the abdominal fascia by pushing the suturing nail pre-set in the sleeve through the push nail mechanism. The operation is convenient, and the fascia suturing can be achieved simply and quickly, reducing the occurrence of surgical complications. However, the above structure has the problem that the puncture cone handle cannot control the position of the pushing mechanism during the pushing of the top rod, leading to inaccurate positioning during the pulling and pushing of the puncture cone handle, which causes the top rod to be unable to be accurately pushed out in place during the puncture process, and thus the overall accuracy and stability during the puncture process cannot be guaranteed. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is the poor accuracy and stability of the existing puncture cone mechanism during the puncture process. In order to overcome the defects of the above prior art, the present application provides a puncture cone handle which is matched with a slide rod through a tension spring, and the slide rod is limited and matched with a first limiting part and a second limiting part. During the pulling or pushing of the puncture cone handle, the slide rod can be accurately positioned, so that the puncture top rod can be effectively pushed out, and the overall accuracy and stability during the puncture process are improved.

[0005] For the purpose of the utility model, the following technical solutions are adopted:

[0006] The utility model provides a disposable laparoscopic puncture cone mechanism, including puncture cone cover, puncture cone handle, tension spring, slide bar, puncture top rod, puncture cone sleeve and puncture cone head, the puncture cone handle is vertically through and moves the connection on puncture cone cover, the slide cavity is arranged in the vertical of puncture cone handle, the slide bar is vertically slidably connected in slide cavity, the tension spring is arranged in slide cavity, and the upper end of tension spring is connected with the top of puncture cone handle, and the lower end of tension spring is connected with the slide bar, the top of slide bar is vertically provided with the deformation recess of opening upwards, and the top of slide bar forms two deformation rods that can be extruded deformation, the first limiting portion and the second limiting portion that limit cooperation with the deformation rod are arranged on the outer wall of puncture cone handle respectively, the deformation rod is limited on the first limiting portion in the upper in the retracted state of puncture cone handle, the deformation rod is limited on the second limiting portion in the lower through the action of tension spring in the pulled out state of puncture cone handle, the puncture top rod is vertically installed in the bottom of slide bar, the puncture cone sleeve is sleeved on puncture cone handle, the outer wall of puncture cone sleeve is vertically provided with the top rod opening that communicates with puncture cone sleeve inner chamber, and the puncture top rod is located at top rod opening and is located the outside of puncture cone sleeve, the puncture cone head is vertically installed in the bottom of puncture cone sleeve, the puncture cone handle on the mechanism is cooperated with slide bar through tension spring, and is limited cooperation with the first limiting portion and the second limiting portion through slide bar, can ensure accurate positioning of slide bar in the process of pulling or advancing puncture cone handle, thereby ensuring that the puncture top rod is effectively ejected, and the overall accuracy and stability in the puncture process are improved.

[0007] As preferred, the first limiting portion is the first slide bar clamping opening symmetrically arranged on the left and right outer walls of the slide bar, and both first slide bar clamping openings communicate with the slide cavity. In the retracted state of the puncture cone handle, the deformation rods are abutted at the first slide bar clamping openings through the action of the tension spring. By means of the first slide bar clamping opening, the deformation rods can be conveniently stretched out from the first slide bar clamping opening, so as to ensure that the top of the deformation rods is abutted at the top of the first slide bar clamping opening.

[0008] As preferred, the second limiting portion is the second slide bar clamping opening symmetrically arranged on the left and right outer walls of the slide bar, and both second slide bar clamping openings communicate with the slide cavity. In the pulled-out state of the puncture cone handle, the deformation rods are abutted at the second slide bar clamping openings through the action of the tension spring. By means of the second slide bar clamping opening, the deformation rods can be conveniently stretched out from the second slide bar clamping opening, so as to ensure that the top of the deformation rods is abutted at the top of the second slide bar clamping opening.

[0009] As preferred, the bottom of the slide rod is provided with a transversely-through mounting gap; the puncture top rod comprises a first top rod, a second top rod and a top rod connecting block; the top rod connecting block is connected between the top of the first top rod and the top of the second top rod, the puncture top rod is installed at the mounting gap, the bottom surface of the top rod connecting block is attached to the bottom surface of the mounting gap, and the first top rod and the second top rod are located on the left and right sides of the slide rod, a fixing sheet is installed in the mounting gap; the upper end of the fixing sheet is tightly abutted against the top surface of the mounting gap, and the lower end of the fixing sheet is tightly abutted against the top surface of the top rod connecting block; a first top rod opening is vertically provided on the outer wall of the puncture cone handle at the first top rod and the second top rod, and the first top rod and the second top rod are exposed outside the puncture cone handle. The n-shaped puncture top rod can be inserted through the mounting gap, and the top rod connecting block can be supported at the bottom of the slide rod, so that the first top rod and the second top rod are ensured to be located on the left and right sides of the slide rod, and the puncture top rod can be fixed and limited after installation through the fixing sheet, so as to prevent deviation during sliding and to avoid large difference between the moving stroke of the puncture top rod and the moving stroke of the puncture cone handle, and the precision of overall use is ensured.

[0010] As preferred, the puncture cone sleeve is vertically provided with a second top rod opening at the first top rod and the second top rod, and the first top rod and the second top rod are exposed outside the puncture cone sleeve, and top rod sliding grooves are vertically provided on the outer walls of the bottom of the puncture cone sleeve on both sides; the top rod sliding grooves on both sides are vertically aligned with the first top rod and the second top rod respectively. The first top rod and the second top rod can be exposed outside the puncture cone sleeve through the second top rod opening, so as to facilitate cooperation with the anchor inside the puncture sleeve structure, and then facilitate accurate ejection of the anchor.

[0011] As preferred, a limiting step cooperating with the deformation rod is arranged on the inner wall of the puncture cone sleeve at the second top rod opening, the deformation rod is moved and extruded into the limiting step, and the deformation rod is retracted from the second limiting part to the first limiting part under the action of the tension spring. The deformation rod is gradually extruded during the downward movement of the slide rod through the limiting step, and the width of the deformation rod is extruded to be smaller than the inner space width of the puncture cone handle, so that the slide rod is automatically pulled back under the action of the tension spring.

[0012] As preferred, the sliding cavity is a stepped groove with large upper part and small lower part, and the stepped groove vertically extends from the top surface of the puncture cone handle to the bottom of the puncture cone handle; a plug cover is detachably connected on the first step of the stepped groove; the upper end of the tension spring is fixed at the bottom of the plug cover. The formation of the stepped groove facilitates the installation of the plug cover and improves the convenience of disassembly and assembly.

[0013] As preferred, a side wall of the first step above the step groove is provided with a plug clamping interface; a peripheral wall of the plug is provided with a plug clamping block, and the plug clamping block is clamped and matched with the plug clamping interface, a bottom surface of the plug is provided with a plug-in slot opening downward; a plug-in pin is inserted in the plug-in slot; an upper end of the tension spring is hooked on the plug-in pin; a middle part of the slide rod is transversely provided with a tension spring insertion hole; a lower end of the tension spring is hooked on the tension spring insertion hole. The plug clamping block and the plug clamping interface are detachably connected, the convenience of installation is improved, and the tension spring is fixedly connected with the plug-in pin through the plug-in pin.

[0014] As preferred, the puncture cone head comprises a cone body from top to bottom, a cone neck and a cone head; the cone body is installed in the bottom of the puncture cone sleeve, the cone neck extends from the bottom to the outside of the puncture cone sleeve, and the outer wall of the cone head is provided with a cone head sliding groove vertically on both sides; the cone head sliding grooves on both sides are vertically aligned with the first top rod and the second top rod respectively. The cone head sliding groove facilitates the downward movement of the first top rod and the second top rod without interfering with the cone head.

[0015] As preferred, the puncture cone cover is symmetrically provided with a matching recess recessed to the middle on the left and right sides, the matching recess is used for conveniently supporting fingers and using leverage during operation; the bottom of the puncture cone cover on the left and right sides is provided with a detachable clamping block matched with the puncture sleeve structure; the top of the puncture cone handle is provided with a puncture cone handle seat, and the puncture cone handle seat is vertically arranged with the puncture cone handle; in the retracted state of the puncture cone handle, the top surface of the puncture cone cover is attached to the bottom surface of the puncture cone handle seat. The matching recess facilitates the support and leverage of fingers when pulling out or pushing in the puncture cone handle, the puncture cone handle seat facilitates pulling out or pushing in, and the structure of the puncture cone handle seat and the puncture cone cover is attached, ensuring the integrity and aesthetics of the structure.

[0016] In summary, the puncture cone handle of the mechanism is matched with the slide rod through the tension spring, and the slide rod is limited and matched with the first limiting part and the second limiting part, so that the slide rod can be accurately positioned during pulling out or pushing in the puncture cone handle, the puncture top rod can be effectively pushed out, and the overall accuracy and stability during puncture are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structure diagram of the puncture cone mechanism for the disposable laparoscope of the utility model.

[0018] Figure 2 is a sectional view of the puncture cone mechanism for the disposable laparoscope of the utility model in a non-use state.

[0019] Figure 3 is a sectional view of the puncture cone mechanism for the disposable laparoscope of the utility model in a pulled-out state.

[0020] Figure 4 is the cross section view of the advancing state of the puncture cone mechanism for disposable laparoscope of the utility model.

[0021] Figure 5 is the exploded view of the puncture cone mechanism for disposable laparoscope of the utility model.

[0022] Figure 6 is the exploded view of the puncture cone handle of the utility model.

[0023] Figure 7 is the structural schematic view of the puncture cone handle of the utility model.

[0024] Figure 8 is the structural schematic view of the puncture cone head of the utility model.

[0025] Mark explanation:

[0026] 1, puncture cone cover;11, matching recess;12, detachable clamping block;2, puncture cone handle;20, stepped groove;201, first step;202, second step;21, first sliding rod clamping opening;22, second sliding rod clamping opening;23, first ejector pin opening;24, plug cover;241, plug cover clamping block;242, bolt slot;243, bolt;25, plug cover clamping port;26, puncture cone handle seat;3, tension spring;4, sliding rod;40, deformation recess;401, deformation rod;41, installation neutral gear;42, fixed sheet;43, tension spring insertion hole;5, puncture ejector pin;51, first ejector pin;52, second ejector pin;53, ejector pin connecting block;6, puncture cone sleeve;61, second ejector pin opening;62, ejector pin sliding slot;63, limiting step;7, puncture cone head;71, cone body;72, cone neck;73, cone head;74, cone head sliding slot;8, positioning sleeve. Specific implementation

[0027] Firstly, those skilled in the art should understand that the embodiments are only used for explaining the technical principles of the application, and are not intended to limit the protection scope of the application. Those skilled in the art can make adjustments according to the needs in order to adapt to specific application occasions.

[0028] In the description of the embodiments of the application, it should be explained that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0029] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1 to 8 As shown, the disposable laparoscopic puncture cone mechanism includes a puncture cone cover 1, a puncture cone handle 2, a tension spring 3, a sliding rod 4, a puncture top rod 5, a puncture cone cannula 6, a puncture cone head 7, and a positioning sleeve 8. The puncture cone handle 2 is vertically penetrating and movably connected to the puncture cone cover 1. A sliding cavity is vertically arranged inside the puncture cone handle 2, and the sliding rod 4 is vertically slidably connected inside the sliding cavity. The tension spring 3 is arranged inside the sliding cavity, and its upper end is connected to the top of the puncture cone handle 2, while its lower end is connected to the sliding rod 4. The top of the sliding rod 4 has a vertically arranged deformation notch 40 with an upward opening, forming two deformable rods 401 at the top of the sliding rod 4. During downward movement, the two deformable rods 401 can be compressed and contracted by the restriction of the inner wall of the sliding rod 4, thus not hindering the normal movement of the sliding rod 4. The upper and lower outer walls of the puncture cone handle 2 are respectively provided with a first limiting part and a second limiting part that cooperate with the deformation rod 401. When the puncture cone handle 2 is retracted, the deformation rod 401 is limited to the upper first limiting part. When the puncture cone handle 2 is pulled out, the deformation rod 401 is limited to the lower second limiting part by the action of the tension spring 3. The puncture push rod 5 is vertically installed at the bottom of the slide rod 4. The puncture cone sleeve 6 is sleeved on the puncture cone handle 2. The outer wall of the puncture cone sleeve 6 is vertically provided with a push rod opening that communicates with the inner cavity of the puncture cone sleeve 6. The puncture push rod 5 is located at the push rod opening and is located outside the puncture cone sleeve 6. The puncture cone head 7 is vertically installed at the bottom of the puncture cone sleeve 6. The positioning sleeve 8 is sleeved on the outside of the puncture cone sleeve 6, and the positioning sleeve 8 is used for positioning cooperation when it is inserted with the puncture sleeve structure. The puncture cone handle 2 of the mechanism is engaged with the slide rod 4 by the tension spring 3, and the slide rod 4 is engaged with the first limiting part and the second limiting part to ensure that the slide rod 4 is accurately positioned during the pulling or pushing of the puncture cone handle 2, thereby ensuring that the puncture rod 5 is effectively pushed out, and improving the accuracy and stability during the puncture process.

[0032] like Figures 1 to 7The first limiting part is a first sliding rod clamping opening 21 symmetrically arranged on the outer wall of the sliding rod 4 on both sides, and both first sliding rod clamping openings 21 are in communication with the sliding cavity. When the puncture cone handle 2 is retracted, the deformed rod 401 is abutted at the first sliding rod clamping opening 21 by the action of the tension spring 3. The first sliding rod clamping opening 21 facilitates the deformed rod 401 to extend out of the first sliding rod clamping opening 21 after being stretched, thereby ensuring that the top of the deformed rod 401 is abutted on the top of the first sliding rod clamping opening 21. The second limiting part is a second sliding rod clamping opening 22 symmetrically arranged on the outer wall of the sliding rod 4 on both sides, and both second sliding rod clamping openings 22 are in communication with the sliding cavity. When the puncture cone handle 2 is pulled out, the deformed rod 401 is abutted at the second sliding rod clamping opening 22 by the action of the tension spring 3. The second sliding rod clamping opening 22 facilitates the deformed rod 401 to extend out of the second sliding rod clamping opening 22 after being stretched, thereby ensuring that the top of the deformed rod 401 is abutted on the top of the second sliding rod clamping opening 22. The opening design structure is simple and ingenious, and is convenient for limiting and positioning.

[0033] As shown in Figures 1 to 7 The bottom of the sliding rod 4 is provided with a left-right direction through mounting gap 41; the puncture top rod 5 includes a first top rod 51, a second top rod 52 and a top rod connecting block 53; the top rod connecting block 53 is connected between the top of the first top rod 51 and the top of the second top rod 52, the puncture top rod 5 is installed at the mounting gap 41, the bottom surface of the top rod connecting block 53 is attached to the bottom surface of the mounting gap 41, and the first top rod 51 and the second top rod 52 are located on both sides of the sliding rod 4; the mounting gap 41 is provided with a fixed sheet 42; the upper end of the fixed sheet 42 is abutted on the top surface of the mounting gap 41, and the lower end of the fixed sheet 42 is abutted on the top surface of the top rod connecting block 53; the outer wall of the puncture cone handle 2 is provided with a first top rod opening 23 vertically at the first top rod 51 and the second top rod 52, and the first top rod 51 and the second top rod 52 are exposed outside the puncture cone handle 2, facilitating cooperation with the anchor in the internal structure of the puncture sleeve. The n-shaped puncture top rod 5 can be inserted into the mounting gap 41, and the top rod connecting block 53 can be supported at the bottom of the sliding rod 4, thereby ensuring that the first top rod 51 and the second top rod 52 are located on both sides of the sliding rod 4. The fixed sheet 42 can facilitate fixing and limiting of the puncture top rod 5 after installation, prevent deviation during sliding, and avoid large difference between the moving stroke of the puncture top rod 5 and the moving stroke of the puncture cone handle 2, thereby ensuring the accuracy of the whole use.

[0034] As shown in Figures 1 to 7As shown, the second top rod opening 61 is vertically arranged on the puncture cone sleeve 6 at the first top rod 51 and the second top rod 52, and exposes the first top rod 51 and the second top rod 52 outside the puncture cone sleeve 6, and the top rod sliding groove 62 is vertically arranged on the outer wall of the bottom of the puncture cone sleeve 6; the two top rod sliding grooves 62 are vertically aligned with the first top rod 51 and the second top rod 52, respectively. The first top rod 51 and the second top rod 52 can be exposed outside the puncture cone sleeve 6 through the second top rod opening 61, so as to facilitate cooperation with the anchor inside the puncture sleeve structure, and then facilitate accurate ejection of the anchor. The inner wall of the puncture cone sleeve 6 at the second top rod opening 61 is provided with a limiting step 63 matched with the deformation rod 401, and the deformation rod 401 is moved and extruded into the limiting step 63, and the deformation rod 401 is retracted from the second limiting portion to the first limiting portion under the action of the tension spring 3. The limiting step 63 can gradually extrude the deformation rod 401 during the downward movement of the sliding rod 4, so that the width of the deformation rod 401 is extruded to be smaller than the inner space width of the puncture cone handle 2, so as to realize automatic pulling back of the sliding rod 4 under the action of the tension spring 3.

[0035] As shown in Figures 5 to 7 The sliding cavity is a stepped groove 20 with large upper and small lower, and the stepped groove 20 vertically extends from the top surface of the puncture cone handle 2 to the bottom of the puncture cone handle 2; the upper is the first step 201, and the lower is the second step 202, the sliding rod 4 is located in the second step 202 for sliding, and the first step 201 of the stepped groove 20 is detachably connected with the plug cover 24; the upper end of the tension spring 3 is fixed at the bottom of the plug cover 24. The formation of the stepped groove 20 facilitates the installation of the plug cover 24 and improves the convenience of disassembly. The sidewall of the first step 201 of the stepped groove 20 is provided with a plug cover clamping port 25; the outer peripheral wall of the plug cover 24 is provided with a plug cover clamping block 241, and the plug cover clamping block 241 is clamped and matched with the plug cover clamping port 25, the bottom surface of the plug cover 24 is provided with a plug-in slot 242 with downward opening; the plug-in slot 242 is inserted with a plug-in pin 243; the upper end of the tension spring 3 is hooked on the plug-in pin 243; the middle part of the sliding rod 4 is transversely provided with a tension spring insertion hole 43; the lower end of the tension spring 3 is hooked on the tension spring insertion hole 43. The plug cover clamping block 241 and the plug cover clamping port 25 are detachably connected, which improves the convenience of installation, and the plug-in pin 243 is fixedly connected with the tension spring 3.

[0036] As shown in Figures 1 to 8As shown, the puncture cone head 7 includes a top-down cone body 71, a cone neck 72 and a cone head 73; the cone head 73 head is sharp and can smoothly break the human muscle and fat tissue, and the tail is flat and can bear a certain tension to ensure that the puncture cone does not come out at the bottom of the abdominal cavity. The cone body 71 is installed in the bottom of the puncture cone sleeve 6, and the bottom of the puncture cone sleeve 6 is conical. When the patient's abdominal fat is thick, the cone body 73 can be further deepened without causing damage to the incision. The cone neck 72 extends from the bottom to the outside of the puncture cone sleeve 6, and the cone neck 72 is made of SUS304 stainless steel and is firmly connected with the cone head 73 and the cone body 71 by mold injection. The cone neck 72 reduces the connection space of the cone head 73 and the cone body 71 while ensuring the structural strength, and gives space to the muscle tissue to realize the hook effect of the cone head 73. The outer wall of the cone head 73 is provided with a cone head sliding groove 74 on both sides in a vertical manner; the two sides of the cone head sliding groove 74 are vertically aligned with the first top rod 51 and the second top rod 52. The cone head sliding groove 74 facilitates the downward movement of the first top rod 51 and the second top rod 52 without interfering with the cone head 73.

[0037] As shown in Figures 1 to 4 The puncture cone cover 1 is symmetrically provided with a matching recess 11 recessed towards the middle on both sides, which is used for finger support and leverage during operation; the bottom of the puncture cone cover 1 is provided with a detachable clamping block 12 which is connected with the puncture sleeve structure; the top of the puncture cone handle 2 is provided with a puncture cone handle seat 26, and the puncture cone handle seat 26 is vertically arranged with the puncture cone handle 2. In the retracted state of the puncture cone handle 2, the top surface of the puncture cone cover 1 is attached to the bottom surface of the puncture cone handle seat 26. The matching recess 11 facilitates the support and leverage of the fingers when pulling or pushing the puncture cone handle 2, and the puncture cone handle seat 26 facilitates pulling or pushing. At the same time, the structure of the puncture cone handle seat 26 and the puncture cone cover 1 is attached, which ensures the integrity and aesthetics of the structure.

[0038] When the product puncture cone head 7 is inserted into the abdominal cavity, the anchor of the puncture sleeve structure needs to be pushed to the bottom of the abdominal cavity, and the puncture cone handle 2 should be pulled tight until it is closed. At this time, since one end of the fixed sheet 42 is limited by the puncture cone sleeve 6, the fixed sheet 42 and the puncture top rod 5 and the sliding rod 4 connected thereto remain stationary when the puncture cone handle 2 moves. Since one end of the tension spring 3 is connected to the sliding rod 4, and the other end moves with the puncture cone handle 2 through the bolt 243 and the plug cover 24, the tension spring 3 is gradually stretched during the pulling process of the puncture cone handle 2, and the elastic potential energy of the tension spring increases. As shown in Figure 3 When the puncture cone handle 2 is completely pulled open.

[0039] With the continuous pull out the piercing cone handle 2, when the piercing cone handle 2 end meets the slide bar 4 bottom, at this time, due to the fixed sheet 42 limiting, the piercing cone handle 2 cannot continue to move, that is, at this time, the piercing cone handle 2 is completely pulled open, as shown in Figure 3 Because the slide bar 4 end has an opening structure, which is limited by the space of the inner wall of the piercing cone handle 2 in the early stage of the piercing cone handle 2 being pulled open, the deformation notch 40 at the top of the slide bar 4 is in a closed state, when the piercing cone handle 2 is completely pulled open, the opening structure is at the second slide bar clamping opening 22, and is not limited by the space of the original inner wall of the piercing cone handle 2, the deformation rod 401 at the top of the slide bar 4 is opened under the elastic force of the injection molding part itself, so that the deformation rod 401 enters the second slide bar clamping opening 22 for limiting. When the piercing cone handle 2 is loosened, the piercing cone handle 2 will move to the piercing cone head 7 under the action of the tension spring 3, at this time, the opening structure of the slide bar 4 is clamped with the second slide bar clamping opening 22 of the piercing cone handle 2, so as to ensure that the piercing cone handle 2 will not rebound.

[0040] Gently push the piercing cone handle 2, the second slide bar clamping opening 22 of the piercing cone handle 2 is pressed against the deformation rod 401 and moves downward, and the slide bar 4, the fixed sheet 42 and the piercing top rod 5 are fixed together, so the piercing top rod 5 also moves downward together, and the anchor can be absorbed and penetrated into the abdominal fascia tissue by the piercing top rod 5, reaches the predetermined position, and continues to press the piercing cone handle 2, and a "click" sound of clamping with the piercing sleeve structure is heard, at this time, as shown in Figure 4 The deformation rod 401 also enters the limiting step 63, the potential energy of the tension spring 3 is released, the slide bar 4 is quickly withdrawn to the home position, and at this time, the anchor can be absorbed and arranged in place in the abdominal cavity.

[0041] In summary, the piercing cone handle 2 on the mechanism is matched with the slide bar 4 through the tension spring 3, and is matched with the first limiting part and the second limiting part through the slide bar 4, so that the slide bar 4 can be accurately positioned during the pulling or pushing of the piercing cone handle 2, and the piercing top rod 5 can be effectively pushed out, and the accuracy and stability in the piercing process are improved.

[0042] In the description of the embodiments of the present application, it should be noted that in the description of the present application, the terms "inner", "outer" and the like indicating the direction or position relationship are based on the direction or position relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or member must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0043] In the description of the application, the description of the terms "one embodiment", "some embodiments", "in this embodiment", "specific example", or "some examples" and the like means that the specific features, mechanisms, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0044] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A puncture cone mechanism for disposable laparoscopy, characterized in that, The utility model provides a puncture cone, including puncture cone cover (1), puncture cone handle (2), tension spring (3), slide bar (4), puncture top rod (5), puncture cone sleeve (6) and puncture cone head (7), puncture cone handle (2) vertical through and remove connection on puncture cone cover (1), the slide cavity is set up in the vertical in puncture cone handle (2), the slide bar (4) vertical sliding connection is in slide cavity, tension spring (3) sets up in slide cavity, and the upper end of tension spring (3) is connected with puncture cone handle (2) top, and the lower end of tension spring (3) is connected with the slide bar (4), the top of slide bar (4) is vertically provided with the deformation recess (40) of opening upwards, and the top of slide bar (4) forms two deformation rods (401) that can be extruded deformation, the first limiting portion and the second limiting portion that are limited with the deformation rod (401) are set up on the outer wall of puncture cone handle (2) two sides respectively, the deformation rod (401) is limited on the first limiting portion in the upper in the retracted state of puncture cone handle (2), through the action of tension spring (3) makes the deformation rod (401) be limited on the second limiting portion in the lower in the pulled out state of puncture cone handle (2), the puncture top rod (5) is vertically installed in the bottom of slide bar (4), the puncture cone sleeve (6) is set in puncture cone handle (2), the outer wall of puncture cone sleeve (6) is vertically provided with top rod opening that communicates with puncture cone sleeve (6) inner chamber, and the puncture top rod (5) is located top rod opening and is located the outside of puncture cone sleeve (6), the puncture cone head (7) is vertically installed in the bottom of puncture cone sleeve (6).

2. The trocar assembly of claim 1, wherein: The first limiting portion is the first slide bar joint opening (21) that is set up on the outer wall of slide bar (4) two sides symmetry, and two first slide bar joint openings (21) all communicate with slide cavity, and through the action of tension spring (3) makes the deformation rod (401) abut at first slide bar joint opening (21) place in the retracted state of puncture cone handle (2).

3. The trocar mechanism according to claim 1 or 2, wherein The second limiting portion is the second slide bar joint opening (22) that is set up on the outer wall of slide bar (4) two sides symmetry, and two second slide bar joint openings (22) all communicate with slide cavity, and through the action of tension spring (3) makes the deformation rod (401) abut at second slide bar joint opening (22) place in the pulled out state of puncture cone handle (2).

4. The trocar assembly of claim 1, wherein: The bottom of the slide rod (4) is provided with a transversely penetrating installation gap (41); the puncture top rod (5) comprises a first top rod (51), a second top rod (52) and a top rod connecting block (53); the top rod connecting block (53) is connected between the top of the first top rod (51) and the top of the second top rod (52), the puncture top rod (5) is installed at the installation gap (41), the bottom surface of the top rod connecting block (53) is attached to the bottom surface of the installation gap (41), and the first top rod (51) and the second top rod (52) are located on the left and right sides of the slide rod (4), a fixing sheet (42) is installed in the installation gap (41); the upper end of the fixing sheet (42) is tightly abutted against the top surface of the installation gap (41), and the lower end of the fixing sheet (42) is tightly abutted against the top surface of the top rod connecting block (53); the outer wall of the puncture cone handle (2) is vertically provided with a first top rod opening (23) at the positions of the first top rod (51) and the second top rod (52), and the first top rod (51) and the second top rod (52) are exposed outside the puncture cone handle (2).

5. The trocar assembly of claim 4, wherein: The puncture cone sleeve (6) is vertically provided with a second top rod opening (61) at the positions of the first top rod (51) and the second top rod (52), and the first top rod (51) and the second top rod (52) are exposed outside the puncture cone sleeve (6), and the bottom of the puncture cone sleeve (6) is vertically provided with a top rod sliding groove (62) on the outer wall of each side; the top rod sliding grooves (62) on the two sides are vertically aligned with the first top rod (51) and the second top rod (52) respectively.

6. The trocar assembly of claim 5, wherein: The inner wall of the puncture cone sleeve (6) at the position of the second top rod opening (61) is provided with a limiting step (63) matched with the shape change rod (401), the shape change rod (401) is moved and extruded into the limiting step (63), and the shape change rod (401) is retracted from the second limiting portion to the first limiting portion under the action of the tension spring (3).

7. The trocar assembly of claim 1, wherein: The sliding cavity is a stepped groove (20) with a large upper part and a small lower part, and the stepped groove (20) vertically extends from the top surface of the puncture cone handle (2) to the bottom of the puncture cone handle (2); a plug cover (24) is detachably connected to the first step (201) of the stepped groove (20); the upper end of the tension spring (3) is fixed to the bottom of the plug cover (24).

8. The trocar assembly of claim 7, wherein: A plug cover clamping port (25) is arranged on the side wall of the first step (201) of the stepped groove (20); a plug cover clamping block (241) is arranged on the outer peripheral wall of the plug cover (24), and the plug cover clamping block (241) is clamped and matched with the plug cover clamping port (25); the bottom surface of the plug cover (24) is provided with a plug-in slot (242) with an opening downward; a plug-in pin (243) is inserted into the plug-in slot (242); the upper end of the tension spring (3) is hooked on the plug-in pin (243); a tension spring insertion hole (43) is transversely arranged in the middle of the slide rod (4); the lower end of the tension spring (3) is hooked on the tension spring insertion hole (43).

9. The trocar assembly of claim 5, wherein: The puncture cone head (7) comprises a top-down cone body (71), a cone neck (72) and a cone head (73); the cone body (71) is installed in the bottom of the puncture cone sleeve (6), the cone neck (72) extends from the bottom to the outside of the puncture cone sleeve (6), and the outer wall of the cone head (73) is vertically provided with a cone head sliding groove (74) on both sides; the cone head sliding grooves (74) on both sides are vertically aligned with the first top rod (51) and the second top rod (52) respectively.

10. The trocar assembly of claim 1, wherein: The puncture cone cover (1) is symmetrically provided with a matching recess (11) recessed to the middle on the left and right sides, the matching recess (11) is used for conveniently supporting fingers and using force during operation; the bottom of the puncture cone cover (1) is provided with a detachable clamping block (12) matched with the puncture sleeve structure; the top of the puncture cone handle (2) is provided with a puncture cone handle seat (26), and the puncture cone handle seat (26) is vertically arranged with the puncture cone handle (2); in the retracted state of the puncture cone handle (2), the top surface of the puncture cone cover (1) is attached to the bottom surface of the puncture cone handle seat (26).

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