Abdominal cavity puncture device with improved suture tensioning structure

Abstract

The utility model relates to the technical field of medical tools, in particular to an abdominal cavity puncture device with an improved suture tensioning structure. Comprising a sleeve, the upper end of the sleeve communicates with a communicating pipe, a shell is mounted on the outer side of the communicating pipe, a mounting cavity is formed between the shell and the sleeve, reel bodies are rotationally mounted on the portions, on the two opposite sides of the communicating pipe, of the mounting cavity correspondingly, elastic grooves are formed in the sides, facing the communicating pipe, of the two reel bodies correspondingly, and torsional springs are arranged in the two elastic grooves correspondingly; one ends of the two torsion springs are connected with the two elastic grooves respectively, the other ends of the two torsion springs extend out of the elastic grooves and are connected on the side face of the communicating pipe through connecting rods, and clamping blocks used for fixing the connecting rods are arranged on the side face of the communicating pipe. The problems that in the prior art, the connecting position of a torsion spring and a puncture outfit is generally fixed through only one clamping groove, the structural stability is poor, the suture function breaks down when the torsion spring and the clamping groove are separated in the transportation or using process, and use is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical tools, in particular to an abdominal puncture device with an improved suture tensioning structure. Background Art

[0002] Laparoscopic surgery has gradually replaced traditional surgery due to its advantages such as less trauma, less physiological interference to patients, good cosmetic effect, less pain, and faster recovery. It has been widely used in general surgery, gynecology, and cardiothoracic surgery. Laparoscopic surgery requires opening a hole in the patient's abdomen and performing the operation under laparoscopic observation. Fascia suture is required after the operation. Fascia suture is difficult to operate due to the small incision and deep inner wall. The current solutions include manual suturing and fascia suturer suturing. Manual suturing is suitable for thin patients. For obese patients, the abdominal wall tissue is thick and cannot meet the requirements of accurate and effective suturing of the puncture incision, leading to a series of complications such as bleeding, infection, puncture hernia and injury. Fascia suturer suturing can suture the fascia of obese patients, but the puncture device must be pulled out first, and then the fascia suturer must be operated. The operation is complicated and the operation time is long, which increases the risk of infection for patients.

[0003] For the above reasons, currently, the abdominal puncture device has gradually added a push-pin suturing mechanism, for example, the Chinese invention patent with the patent application number CN202111344054.6 discloses a push-pin suturing structure for a laparoscopic puncture suturing device, and the Chinese invention patent with the patent application number CN201480057286.5 discloses a trocar and wound closure device. Both of them are based on the original abdominal puncture device, and the wound suturing mechanism is added, so that the patient's wound can be quickly sutured after the operation is completed.

[0004] For example, the above-mentioned patents and other similar abdominal puncture devices with wound suturing function in the prior art all require sutures and rivet sutures to be preset in the abdominal puncture device, and the whole is assembled in the abdominal puncture device. Since the sutures need to be in a straight state when in use to avoid being entangled or interfering with other components during use, the sutures are tensioned by an internal tensioning mechanism when stored in the abdominal puncture device.

[0005] For example, in the above-mentioned patent: Trocar and wound closure device, it is recorded in the specification: "In some embodiments, the reel includes a mechanism to provide automatic retraction of multiple sutures, such as during the setting of anchoring. Optionally, the mechanism includes the use of one or more clocksprings, operably connected to the reel. A potential advantage of storing multiple sutures on a reel may include reducing the risk of suture entanglement and / or curling, reducing the risk of multiple sutures interfering with the passage of the tool through the cannula, reducing the risk of multiple sutures interfering with the advancement of the trocar through the cannula, and / or other advantages."

[0006] At present, puncture devices with suturing functions are basically equipped with two sets of suture staples, suture threads and tensioning structure reel assemblies. When suturing is needed, the suture staples are pushed into the patient's abdomen through the puncture device's pin pusher assembly. When the suture staples enter the patient's abdomen, the suture threads are driven in together, and because the suture staples pull the suture threads, the suture threads originally wrapped around the tensioning structure will be detached, so that subsequent medical staff can quickly fix the wound by tying a knot in the wound with the suture threads. At present, the two sets of tensioning structures in the abdominal puncture device are independent of each other, and each tensioning structure uses a separate torsion spring, or a spring or other elastic member to enable the tensioning wheel or reel to have the function of tightening the suture thread.

[0007] Based on the above-mentioned prior art, the torsion spring springs in the two separate tensioning structures need to be fixed to the tensioning wheel reel separately, and for the convenience of installation, the connection position between the torsion spring and the puncture device is usually fixed with only one slot. Although one end of the torsion spring can be quickly fixed to the puncture device, this will result in poor structural stability. During transportation or use, the separation of the torsion spring and the slot will cause suturing function failure, affecting use. Utility Model Content

[0008] The purpose of the utility model is to provide an abdominal puncture device with an improved suture tensioning structure, so as to solve the problem in the prior art that the connection position between the torsion spring and the puncture device is usually fixed by only one slot, the structural stability is poor, and the separation of the torsion spring and the slot during transportation or use will cause suturing function failure, thus affecting use.

[0009] In order to solve the above technical problems, the first technical solution adopted by the utility model is:

[0010] A abdominal puncture device with an improved suture tensioning structure comprises a sleeve, wherein the upper end of the sleeve is connected to a connecting tube, a shell is installed on the outer side of the connecting tube, an installation cavity is formed between the shell and the sleeve, a reel body is rotatably installed on opposite sides of the connecting tube in the installation cavity, two reel bodies are provided with elastic grooves on one side facing the connecting tube, torsion springs are provided in the two elastic grooves, one end of the two torsion springs is respectively connected to the two elastic grooves, the other end of the two torsion springs protrudes from the elastic grooves, and the two sides of the connecting tube are connected by a connecting rod, and a clamping block for fixing the connecting rod is provided on the side of the connecting tube.

[0011] A further technical solution is that a winding groove is provided in a recessed side surrounding the reel body, a winding column is provided on the protrusion at the bottom of the winding groove, a first rotating shaft is provided on the middle protrusion at the bottom of the elastic groove, a rotating tube is provided on the connecting tube at a position corresponding to the reel body, and the first rotating shaft and the rotating tube are rotatably connected; a fixing column is provided on the protrusion at the bottom of the elastic groove, and one end of the torsion spring placed in the elastic groove is hung on the winding column through a bent hook.

[0012] A further technical solution is that the groove wall of the winding groove is recessed at the position of the winding post in a direction away from the winding post to form an installation opening.

[0013] A further technical solution is that a second rotating shaft is provided on the middle protrusion of the reel body on the side away from the elastic groove, and the axis of the first rotating shaft and the second rotating shaft are the same.

[0014] A further technical solution is that a groove wall surrounding the elastic groove is provided with a plurality of ribs protruding toward the middle of the elastic groove.

[0015] A retaining ring is arranged on the side of the connecting pipe around the rotating pipe, and the outer wall of the torsion spring away from the elastic groove is attached to the inner wall of the retaining ring; a protruding notch is arranged on the side of the retaining ring facing the clamping block, and the end of the torsion spring extending out of the elastic groove passes through the protruding notch and is connected to the connecting rod.

[0016] The connecting pipe is provided with a plurality of supporting flat bars around the rotating pipe in the retaining ring, and the plurality of supporting flat bars are located in the same plane at a side away from the connecting pipe.

[0017] A fixed notch is recessed on one side of the clamping block away from the connecting pipe, and the middle part of the connecting rod is clamped in the fixed notch; a supporting block connected to the connecting pipe is arranged on the lower side of the clamping block.

[0018] A plurality of limit baffles are arranged on the side of the connecting pipe around the rotating pipe, and the edge of the reel body is slidably fitted with the plurality of limit baffles; a supporting rib connected to the connecting pipe is arranged on the outer side of the limit baffle.

[0019] Compared with the prior art, the utility model has at least one of the following beneficial effects: 1. By setting a connecting rod, the two torsion springs can be connected into a whole, so that the positions where the two torsion springs are fixed to the connecting pipe can be fixed together by the connecting rod, thereby making the fixation between the torsion spring and the connecting pipe more stable and will not loosen during transportation or use; 2. By setting a clamping block, it is convenient to fix the connecting rod and the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a schematic diagram of a reel body and a torsion spring of a abdominal puncture device with an improved suture tensioning structure.

[0021] Figure 2 The utility model is a schematic diagram of the reel body of the abdominal puncture device with an improved suture tensioning structure.

[0022] Figure 3 The utility model is an overall schematic diagram of an abdominal puncture device with an improved suture tensioning structure.

[0023] Figure 4The utility model is an internal schematic diagram of an abdominal puncture device with an improved suture tensioning structure.

[0024] Figure 5 This is a schematic diagram of the assembly of a reel body of a abdominal puncture device with an improved suture tensioning structure according to the utility model onto a connecting tube.

[0025] Figure 6 This is a schematic diagram of a torsion spring of an abdominal puncture device with an improved suture tensioning structure according to the utility model being assembled on a connecting tube.

[0026] Figure 7 The utility model is a schematic diagram of the cooperation between a reel assembly and a suture staple of a abdominal puncture device.

[0027] Icon: 1- reel body, 2- winding groove, 3- winding column, 4- elastic groove, 5- first rotating shaft, 6- fixed column, 7- torsion spring, 8- mounting port, 9- second rotating shaft, 10- rib, 11- suture nail, 12- puncture cone assembly, 13- shell, 14- mounting cavity, 15- suture, 16- rotating tube, 17- limiting baffle, 18- extending notch, 19- sleeve, 20- connecting tube, 21- connecting rod, 22- block, 23- baffle ring, 24- supporting flat bar, 25- fixed notch, 26- supporting block, 27- supporting rib. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] Figures 1 to 7 Shown is an embodiment of the utility model.

[0030] Embodiment 1:

[0031] An improved abdominal puncture device with a suture tensioning structure includes a sleeve 19, a connecting tube 20 is connected to the upper end of the sleeve 19, a shell 13 is installed on the outside of the connecting tube 20, a mounting cavity 14 is formed between the shell 13 and the sleeve 19, a reel body 1 is rotatably mounted on the opposite sides of the connecting tube 20, two reel bodies 1 are provided with elastic grooves 4 on the side facing the connecting tube 20, torsion springs 7 are provided in the two elastic grooves 4, one end of the two torsion springs 7 is respectively connected to the two elastic grooves 4, the other end of the two torsion springs 7 extends out of the elastic grooves 4, and the two torsion springs 7 are connected to the side of the connecting tube 20 by a connecting rod 21, and a clamping block 22 for fixing the connecting rod 21 is provided on the side of the connecting tube 20. By providing the connecting rod 21, the two torsion springs 7 can be connected into a whole, so that the positions where the two torsion springs 7 are fixed to the connecting tube 20 can be fixed together by the connecting rod 21, so that the fixation between the torsion springs 7 and the connecting tube 20 is more stable and will not loosen during transportation or use. The clamping block 22 is provided to facilitate the fixing of the connecting rod 21 and the connecting pipe 20. The two torsion springs 7 and the connecting rod 21 can be integrally formed during processing, so as to achieve better integrity.

[0032] Both sides of the inner wall at the lower end of the sleeve 19 are provided with suture nails 11, and a puncture cone assembly 12 is installed in the connecting tube 20 and the sleeve 19. The puncture cone assembly 12 is provided with a nail pushing mechanism for pushing the suture nail 11 out of the sleeve 19. A shell 13 is installed on the outside of the connecting tube 20, and a mounting cavity 14 is formed between the shell 13 and the sleeve 19. The mounting cavity 14 is rotatably installed with the reel body 1 as in Example 1 on both opposite sides of the connecting tube 20. One end of the torsion spring 7 extending out of the elastic groove 4 is connected to the outer wall of the connecting tube 20, and a suture thread 15 is wound in the winding groove 2. The free end of the suture thread 15 passes through the shell 13 and is connected to the suture nail 11. A seal for sealing the gap between the connecting tube 20 and the puncture cone assembly 12 is installed in the connecting tube 20, so that when the puncture device is inserted into the abdominal cavity as a whole, the gas in the abdominal cavity will not escape from this position, resulting in a decrease in abdominal cavity pressure. The puncture cone assembly 12 and the nail pushing mechanism can adopt any form in the prior art, such as the nail pushing structure and puncture cone assembly in CN201480057286.5 mentioned in the background technology and the Chinese invention patent with application number 201910612495.6. In the above patents, different structures are adopted, but the puncture cone assembly and nail pushing mechanism with the same function are used to push the suture nail 11 out of the sleeve. The puncture cone assembly 12 and the nail pushing mechanism of the utility model adopt any one of the puncture cone assembly and nail pushing mechanism in the above patents to realize the pushing out of the suture nail 11. A card slot for fixing the suture nail 11 is provided on the inner wall of the sleeve 19. When the wound is not sutured, the suture nail 11 is fixed in the card slot. When suture is required, the suture nail 11 is pushed out of the sleeve by the nail pushing mechanism and enters the patient's body, and then the suture thread 15 is tied on the outside of the patient's skin to pull the suture nail 11 to suture the wound.

[0033] A winding groove 2 is provided in the recessed side of the winding body 1, a winding post 3 is provided on the groove bottom protrusion of the winding groove 2, a first rotating shaft 5 is provided on the middle protrusion of the groove bottom of the elastic groove 4, a rotating tube 16 is provided on the connecting tube 20 at a position corresponding to the reel body 1, and the first rotating shaft 5 and the rotating tube 16 are rotatably connected; a fixing post 6 is provided on the groove bottom protrusion of the elastic groove 4, and one end of the torsion spring 7 placed in the elastic groove 4 is hung on the winding post 3 through a hook. By providing the winding groove 2, when the suture 15 is wound on the reel body 1, it can be stored in the winding groove 2 and will not slip off the reel body 1. By setting the winding post 3, after the suture 15 passes through the rivet of the suture nail 11, the suture 15 is made into a ring shape by bonding or knotting, so that the suture 15 can be wound on the reel body 1 only after the suture 15 is hung on the winding post 3, and there is no need to wait for the suture 15 to be bonded to the reel body 1, which shortens the processing time of this step. By setting the torsion spring 7, the elastic force provided by the torsion spring 7 can make the suture 15 straight after the entire puncture device is assembled. Since the suture 15 is hung on the winding post 3, when the suture 15 is released, as long as it is rotated to a certain angle, the suture 15 will slide off the winding post 3 to separate the suture 15 from the reel body 1, so that the force of releasing the suture 15 each time is almost the same and will not be affected by the bonding strength.

[0034] The groove wall of the winding groove 2 is recessed in the direction away from the winding post 3 at the position of the winding post 3 to form an installation opening 8. By providing the installation opening 8, the width of the winding groove 2 at the position of the installation opening 8 can be greater than that of other positions of the winding groove 2, so that the assembler can hang the suture 15 on the winding post 3 more easily, and can assemble quickly, thereby improving the assembly efficiency.

[0035] Embodiment 2:

[0036] On the basis of Example 1, the middle protrusion of the reel body 1 on the side away from the elastic groove 4 is provided with a second rotating shaft 9, and the axis of the first rotating shaft 5 and the second rotating shaft 9 are the same. By providing the second rotating shaft, when the reel body 1 is assembled into the installation cavity 14, the second rotating shaft 9 can be used to support the inner wall of the housing 13, so that the first rotating shaft 5 can be stably rotated and arranged in the rotating tube 16.

[0037] A plurality of ribs 10 are provided around the groove wall of the elastic groove 4 and protrude toward the middle of the elastic groove 4. By providing the ribs 10, a supporting force can be provided to the groove wall of the elastic groove 4, so that the groove wall of the elastic groove 4 still has sufficient strength even when the wall is thin. At the same time, with the help of the ribs 10 arranged at intervals, when installing the torsion spring 7, the ribs 10 can be used to support the outer wall of the torsion spring 7, so that the torsion spring 7 can be stably installed in the elastic groove 4. At the same time, compared with the torsion spring 7 being directly installed in contact with the groove wall of the elastic groove 4, it is more convenient to install in contact with multiple ribs 10, and the ribs 10 support the part of the torsion spring 7 to cause slight deformation, so that the torsion spring 7 is easier to assemble.

[0038] The two opposite sides of the connecting pipe 20 are both provided with rotating pipes 16, and the first rotating shafts 5 of the two reel bodies 1 are respectively rotatably provided on the two rotating pipes 16. By providing the rotating pipes 16, the rotation stability of the reel body 1 can be improved.

[0039] A retaining ring 23 is arranged around the rotating tube 16 on the side of the connecting tube 20, and the outer wall of the end of the torsion spring 7 away from the elastic groove 4 is attached to the inner wall of the retaining ring 23; the retaining ring 23 is provided with a protruding notch 18 on the side facing the clamping block 22, and the end of the torsion spring 7 protruding from the elastic groove 4 passes through the protruding notch 18 and is connected to the connecting rod 21. By providing the retaining ring 23, the part of the torsion spring 7 placed outside the elastic groove 4 can be fixed, and when the reel body 1 is installed on the connecting tube, the edge of the notch of the elastic groove 4 is aligned with the inner ring of the retaining ring 23, so that the part of the torsion spring 7 protruding from the elastic groove 4 can be smoothly placed in the retaining ring 23.

[0040] The connecting pipe 20 is provided with a plurality of support flat bars 24 around the rotating pipe 16 in the retaining ring 23, and the plurality of support flat bars 24 are in the same plane away from the connecting pipe 20. By providing a plurality of support flat bars 24, the end of the torsion spring 7 extending out of the elastic groove 4 can be kept flat when it is attached to the plurality of support flat bars 24, so that when the torsion spring 7 is driven to rotate, both ends of the torsion spring 7 can be kept stable and will not shake due to the curved surface of the connecting pipe 20.

[0041] A fixing notch 25 is recessed on one side of the clamping block 22 away from the connecting pipe 20, and the middle part of the connecting rod 21 is clamped in the fixing notch 25; a supporting block 26 connected to the connecting pipe 20 is provided on the lower side of the clamping block 22. By providing the fixing notch 25, the connecting rod 21 can be better fixed, so that the two torsion springs 7 can be fixed synchronously.

[0042] Embodiment 3:

[0043] On the basis of the above-mentioned embodiment, a plurality of limit baffles 17 are arranged on the side of the connecting tube 20 around the rotating tube 16, and the edge of the reel body 1 slides and fits with the plurality of limit baffles 17; a supporting rib 27 connected to the connecting tube 20 is arranged on the outer side of the limit baffle 17.

[0044] One end of the winding post 3 away from the bottom of the winding groove 2 protrudes from the notch of the winding groove 2, and the depth of the winding groove 2 at the position of the winding post 3 is lower than the depth of other positions of the winding groove 2. Such a configuration can make it easier to assemble the suture 15 on the winding post 3. After the suture 15 is hung on the winding post 3, when the suture 15 is wound around the winding groove 2, the suture 15 can fit the bottom of the winding post 3.

[0045] A plurality of stoppers 17 are arranged around the rotating tube 16 on the side of the connecting tube 20, and the edge of the reel body 1 and the plurality of stoppers 17 are slidably fitted; a clamping groove 18 is arranged on the outer wall of the connecting tube 20, and one end of the torsion spring 7 extending out of the elastic groove 4 is connected to the clamping groove 18. By providing the stoppers 17, the stability of the installation and rotation of the reel body 1 can be further improved. When the reel body 1 rotates, the plurality of stoppers 17 can fit the edge of the reel body 1, so that the reel body 1 will not shake when rotating. By providing the clamping groove 18, the end of the torsion spring 7 extending out of the elastic groove 4 can be fixed, so that the suture 15 can be straightened by means of the elastic potential energy generated by the rotation of the torsion spring 7.

[0046] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to the modifications and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. An abdominal puncture device with an improved suture tensioning structure, comprising a sleeve (19), wherein the upper end of the sleeve (19) is connected to a connecting tube (20), a shell (13) is installed on the outer side of the connecting tube (20), an installation cavity (14) is formed between the shell (13) and the sleeve (19), and a reel body (1) is rotatably installed on opposite sides of the connecting tube (20), characterized in that: The two reel bodies (1) are each provided with an elastic groove (4) on one side facing the connecting tube (20), and a torsion spring (7) is provided in each of the two elastic grooves (4). One end of the two torsion springs (7) is respectively connected to the two elastic grooves (4), and the other end of the two torsion springs (7) protrudes out of the elastic grooves (4) and is connected to the side of the connecting tube (20) via a connecting rod (21). A clamping block (22) for fixing the connecting rod (21) is provided on the side of the connecting tube (20).

2. According to claim 1, the abdominal puncture device with an improved suture tensioning structure is characterized in that: A winding groove (2) is provided in a recessed manner around the side of the reel body (1); a winding post (3) is provided on a protrusion at the bottom of the winding groove (2); a first rotating shaft (5) is provided on a protrusion in the middle of the bottom of the elastic groove (4); a rotating tube (16) is provided on the connecting tube (20) at a position corresponding to the reel body (1); the first rotating shaft (5) and the rotating tube (16) are rotatably connected; a fixing post (6) is provided on a protrusion at the bottom of the elastic groove (4); and one end of the torsion spring (7) placed in the elastic groove (4) is hung on the winding post (3) through a hook.

3. The abdominal puncture device with improved suture tensioning structure according to claim 2, characterized in that: The groove wall of the winding groove (2) is recessed at the position of the winding post (3) in a direction away from the winding post (3) to form a mounting opening (8).

4. The abdominal puncture device with improved suture tensioning structure according to claim 2, characterized in that: A second rotating shaft (9) is provided on a central protrusion on a side of the reel body (1) facing away from the elastic groove (4), and the axes of the first rotating shaft (5) and the second rotating shaft (9) are the same.

5. The abdominal puncture device with improved suture tensioning structure according to claim 2, characterized in that: A plurality of ribs (10) are provided on the groove wall surrounding the elastic groove (4) and protruding toward the middle of the elastic groove (4).

6. The abdominal puncture device with improved suture tensioning structure according to claim 2, characterized in that: A retaining ring (23) is provided on the side of the connecting tube (20) surrounding the rotating tube (16); the outer wall of the end of the torsion spring (7) away from the elastic groove (4) is in contact with the inner wall of the retaining ring (23); a protruding notch (18) is provided on the side of the retaining ring (23) facing the clamping block (22); the end of the torsion spring (7) protruding from the elastic groove (4) passes through the protruding notch (18) and is connected to the connecting rod (21).

7. The abdominal puncture device with improved suture tensioning structure according to claim 3, characterized in that: The connecting pipe (20) is provided with a plurality of support flat bars (24) in the retaining ring (23) around the rotating pipe (16), and the plurality of support flat bars (24) are located in the same plane on a side away from the connecting pipe (20).

8. The abdominal puncture device with an improved suture tensioning structure according to claim 1, characterized in that: A fixing notch (25) is recessed on one side of the clamping block (22) away from the connecting pipe (20), and a middle portion of the connecting rod (21) is clamped in the fixing notch (25); a supporting block (26) connected to the connecting pipe (20) is provided on the lower side of the clamping block (22).

9. The abdominal puncture device with improved suture tensioning structure according to claim 2, characterized in that: A plurality of position-limiting baffles (17) are arranged on the side of the connecting tube (20) around the rotating tube (16); the edge of the reel body (1) and the plurality of position-limiting baffles (17) are slidably fitted; and a supporting rib (27) connected to the connecting tube (20) is arranged on the outer side of the position-limiting baffles (17).

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