Disposable anorectal anastomat

Abstract

The utility model relates to the technical field of surgical instruments, in particular to a disposable anorectum anastomat which comprises an anorectum anastomat body and an anorectum expansion sleeve, the anorectum expansion sleeve comprises a round tube body and an outer tube body arranged on the round tube body in a sleeved mode, and the round tube body is provided with a near end stretching into anorectum and a far end far away from the near end. The end, close to the near end of the round tube body, of the outer tube body is provided with a flaring sleeve, the outer tube body is arranged at the far end of the round tube body in a sliding mode, the outer tube body is further provided with a locking piece, the round tube body comprises an inner tube body and a plurality of middle tubes which are sequentially connected, the inner tube body and the middle tubes are slidably connected into the outer tube body, and the middle tubes and the inner tube body are detachably connected. And the adjacent middle pipes are detachably connected. According to the disposable anorectum anastomat, the length of the round tube body inserted into the anorectum can be adjusted according to the body condition of a patient, and damage caused by the fact that the anorectum expansion sleeve is inserted into the body of the patient too long in the anorectum anastomosis treatment process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical instruments, in particular to a disposable anorectal stapler. Background Art

[0002] An anorectal stapler is a medical device widely used in anorectal surgeries, mainly for end-to-end anastomosis, end-to-side anastomosis and side-to-side anastomosis in colorectal surgeries. With the development of minimally invasive surgical techniques, the application of anorectal staplers is becoming more and more extensive, and it has become an indispensable important tool in anorectal surgeries.

[0003] During the process of anorectal anastomosis, it is usually necessary to first insert an anorectal dilator into the patient's anorectum, and then insert the anorectal stapler into the interior of the anorectal dilator, so that the anorectal dilator can be inserted into the patient's anorectum more simply for anastomosis. However, the anorectal dilator of traditional anorectal staplers usually has a fixed insertion length, which may cause great discomfort when the anorectal dilator is inserted into the patient's body in some cases, and may even cause certain harm to the patient when the anorectal dilator is inserted into the patient's anorectum for a long time. Summary of the Utility Model

[0004] In order to solve the problem that the insertion length of the existing dilator is fixed and non-adjustable, the utility model provides a disposable anorectal stapler, which can adjust the length of the round tube body inserted into the anorectum according to the patient's physical condition, and reduce the harm caused by the long insertion of the anorectal dilator into the patient's body during the anorectal anastomosis process.

[0005] The utility model provides a disposable anorectal stapler, which includes an anorectal stapler body and an anorectal dilator. The anorectal dilator includes a round tube body and an outer tube body sleeved on the round tube body. The round tube body has a proximal end extending into the anorectum and a distal end away from the proximal end. An expansion sleeve is provided at one end of the outer tube body close to the proximal end of the round tube body. The outer tube body is slidably arranged at the distal end of the round tube body, and a locking member is also provided on the outer tube body. The position of the expansion sleeve is adjusted by sliding the outer tube body, that is, the length of the round tube body extending into the anorectum is adjusted, and the locking member is used for limiting.

[0006] Further, the round tube body includes an inner tube body and a plurality of intermediate tubes connected in sequence. The inner tube body and the intermediate tubes are both slidably connected inside the outer tube body. The intermediate tubes and the inner tube body are detachably connected, and adjacent intermediate tubes are detachably connected. The extending length of the round tube body can be further adjusted by a plurality of detachable intermediate tubes.

[0007] Further, the intermediate tube at the distal end of the round tube body is the end tube, and the outer tube body is fixedly arranged on the end tube through the locking member. The outer tube body is fixed on the end tube through the setting of the locking member, that is, the position of the expansion sleeve is limited.

[0008] Further, the locking member is a locking screw screwed on the outer tube body, and an internally threaded hole mating therewith is provided on the outer tube body. After adjusting the position, the locking screw is tightened until it abuts against the outer wall of the end tube, thereby fixing the position of the outer tube body.

[0009] Further, a locking groove into which the locking screw can extend is further provided on the outer wall of the end tube, and the locking screw screwed on the outer tube body abuts into the locking groove. After adjusting the position, the locking screw is tightened until it abuts against the bottom of the locking groove, which can further fix the position of the outer tube body.

[0010] Further, the locking groove is an inclined groove, and the depth of the inclined groove gradually decreases from the proximal end to the distal end of the circular tube body. The setting of the inclined groove can prevent the locking screw from displacing in the locking groove and ensure the stability of locking.

[0011] Further, a limiting plate is further provided on one side of the end tube close to the distal end of the circular tube body, and the limiting plate is a square block symmetrically arranged on the end face of the end tube. The setting of the limiting plate can prevent the outer tube body from disengaging from the circular tube body.

[0012] Further, one end of several intermediate tubes is provided with an internal thread ring, and the other end is provided with an external thread ring. The connecting end of the inner tube body and the end tube is provided with an internal thread ring or an external thread ring adapted to the intermediate tube. The connection through the external thread ring and the internal thread ring is convenient for installation and disassembly and has good connection stability.

[0013] Further, the inner diameters and outer diameters of the inner tube body, the intermediate tubes and the end tube are all the same. This ensures that the connection surfaces are flush and there are no protrusions.

[0014] Further, a plurality of notches are circumferentially arranged on the flaring sleeve with the center of the circular tube body as the center. Suturing is convenient at the notches, ensuring firm fixation of the flaring sleeve to the perianal skin.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The present utility model provides a disposable anorectal stapler. By slidably arranging a circular tube body inside the outer tube body and adjusting the positions of the circular tube body and the flaring sleeve, the length of the circular tube body inserted into the anorectum can be adjusted according to the physical conditions of the patient, so as to reduce the harm caused by the relatively long insertion of the anorectal dilatation sleeve into the patient's body during the anorectal anastomosis process. Description of the Drawings

[0017] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a structural schematic diagram of an anorectal stapler;

[0019] Figure 2 is a first-angle schematic diagram of an anorectal dilator;

[0020] Figure 3 is a second-angle schematic diagram of an anorectal dilator;

[0021] Figure 4 is a structural schematic diagram of a circular tube body.

[0022] In the figure, 1. Anorectal stapler body, 2. Circular tube body, 21. Proximal end, 22. Distal end, 23. Inner tube body, 24. Intermediate tube, 25. Terminal tube, 26. Locking groove, 27. Limiting plate, 28. Inner threaded ring, 29. Outer threaded ring, 3. Outer tube body, 4. Flaring sleeve, 41. Notch, 5. Locking member. Detailed implementation mode

[0023] Next, the technical solution of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments.

[0024] In order to adjust the length of the circular tube body 2 extending into the anus and rectum, a disposable anorectal stapler is designed. As Figure 1 shown, it includes an anorectal stapler body 1 and an anorectal dilator. A staple cartridge is provided at the front end of the anorectal stapler body 1, and an anvil is assembled at the front end of the staple cartridge. The anorectal dilator is inserted into the anus and rectum of the patient, and then the staple cartridge and the anvil are inserted into the anus and rectum of the patient through the anorectal dilator, so as to perform anastomosis treatment on the anus and rectum of the patient.

[0025] As Figures 2-3 shown, the anorectal dilator includes a circular tube body 2 and an outer tube body 3 sleeved on the circular tube body 2. The circular tube body 2 has a proximal end 21 extending into the anus and rectum and a distal end 22 away from the proximal end 21. A flaring sleeve 4 is provided at one end of the outer tube body 3 close to the proximal end 21 of the circular tube body 2. The outer tube body 3 is slidably arranged at the distal end 22 of the circular tube body 2, and a locking member 5 is also provided on the outer tube body 3.

[0026] When the circular tube body 2 is inserted into the patient's anorectum, it contacts the patient's perianal skin through the flaring sleeve 4, so that the flaring sleeve 4 can be limited. Through the limitation of the flaring sleeve 4, the circular tube body 2 connected to it can be limited, and the length of the circular tube body 2 inserted into the patient's anorectum can be restricted. When the flaring sleeve 4 is at different positions outside the circular tube body 2, the length of the circular tube body 2 inserted into the patient's anorectum can be adjusted. The locking member 5 is used to lock the relative positions of the circular tube body 2 and the outer tube body 3. The outer tube body 3 can be slid on the outside of the circular tube body 2 to adjust the position of the outer tube body 3. After the position adjustment of the outer tube body 3 is completed, the outer tube body 3 is locked on the outside of the circular tube body 2 through the locking member 5.

[0027] As Figure 4 shown, the circular tube body 2 includes an inner tube body 23 and a plurality of intermediate tubes 24 connected in sequence. The inner tube body 23 and the intermediate tubes 24 are both slidably connected inside the outer tube body 3. The intermediate tubes 24 and the inner tube body 23 are detachably connected, and adjacent intermediate tubes 24 are detachably connected. According to the needs of the patient, the corresponding number of intermediate tubes 24 are assembled on the inner tube body 23 to adjust the length of the combination of the inner tube body 23 and the intermediate tubes 24, so as to be able to adjust the length of the circular tube body 2 and reduce the length of the rear end of the circular tube body 2 protruding, which is convenient for medical staff to operate.

[0028] The intermediate tube 24 located at the distal end 22 of the circular tube body 2 is the end tube 25. The outer tube body 3 is fixedly arranged on the end tube 25 through the locking member 5. The locking member 5 is a locking screw screwed on the outer tube body 3, and the outer tube body 3 is provided with an internal thread hole matching with it. The locking screw can abut against the circular tube body 2, so as to relatively simply complete the locking of the outer tube body 3 and the circular tube body 2.

[0029] The outer wall of the end tube 25 is also provided with a locking groove 26 into which the locking screw can extend. The locking screw screwed on the outer tube body 3 abuts into the locking groove 26. The locking groove 26 is an inclined groove, and the depth of the inclined groove gradually decreases from the proximal end 21 to the distal end 22 of the circular tube body 2. The inner wall of the inclined groove forms an inclined surface. When the locking screw extends into the inclined groove and abuts against the inclined surface, the end tube 25 can be locked, reducing the phenomenon that the end tube 25 is displaced towards the proximal end under force, and further improving its installation stability.

[0030] A limiting plate 27 is also provided on one side of the end tube 25 close to the distal end 22 of the circular tube body 2. The limiting plate 27 is a square block or a sector block symmetrically arranged on the end surface of the end tube 25. By providing the limiting plate 27, the phenomenon that the circular tube body 2 is separated from the outer tube body 3 under force can be reduced, and the assembly stability of the circular tube body 2 can be improved.

[0031] One end of a number of intermediate pipes 24 is provided with a threaded inner ring 28, and the other end is provided with a threaded outer ring 29. The connecting ends of the inner pipe body 23 and the end pipe 25 are provided with a threaded inner ring 28 or a threaded outer ring 29 adapted to the intermediate pipe 24. Through the threaded connection mode of the threaded inner ring 28 and the threaded outer ring 29, the inner pipe body 23, the intermediate pipe 24 and the end pipe 25 can be connected together relatively simply, the installation and disassembly are convenient, and the connection stability is good.

[0032] The inner diameters and outer diameters of the inner pipe body 23, the intermediate pipe 24 and the end pipe 25 are the same, which reduces the protrusions on the connecting surfaces of adjacent workpieces. In addition, a scale can be provided on the outer sides of the inner pipe body 23, the intermediate pipe 24 and the end pipe 25. By setting the scale, it is convenient for medical staff to determine the length of the circular pipe body 2 extending out of the outer pipe body 3.

[0033] A number of notches 41 are circumferentially arranged on the flaring sleeve 4 with the center of the circular pipe body 2 as the center. The arrangement of the notches 41 facilitates the fixation of the flaring sleeve 4 to the perianal skin by sutures, so as to ensure that the flaring sleeve 4 is firmly fixed around the anus.

[0034] During use, determine the depth of insertion of the anorectal dilator into the patient's anorectum according to the patient's physical condition, and then assemble the inner pipe body 23, the intermediate pipe 24 and the end pipe 25 to assemble a circular pipe body 2 of the corresponding length. After the assembly is completed, insert the circular pipe body 2 into the patient's anorectum through the outer pipe body 3. After adjusting the length of the pipe body of the circular pipe body 2 located at the front end of the outer pipe body 3, lock the circular pipe body 2 through the locking member 5.

[0035] The above description is illustrative rather than restrictive to the present utility model. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined by the appended claims, but all will fall within the protection scope of the present utility model.

Claims

1. Disposable anorectal stapler, comprising an anorectal stapler body (1) and an anorectal dilator sleeve, characterized in that: The anorectal dilator sleeve includes a circular tube body (2) and an outer tube body (3) sleeved on the circular tube body (2). The circular tube body (2) has a proximal end (21) extending into the anorectum and a distal end (22) away from the proximal end (21). One end of the outer tube body (3) close to the proximal end (21) of the circular tube body (2) is provided with a flaring sleeve (4). The outer tube body (3) is slidably arranged at the distal end (22) of the circular tube body (2), and a locking member (5) is also arranged on the outer tube body (3).

2. The disposable anorectal stapler according to claim 1, wherein: The circular tube body (2) includes an inner tube body (23) and a number of intermediate tubes (24) connected in sequence. Both the inner tube body (23) and the intermediate tubes (24) are slidably connected inside the outer tube body (3). The intermediate tubes (24) and the inner tube body (23) are detachably connected, and adjacent intermediate tubes (24) are detachably connected.

3. The disposable anorectal stapler according to claim 2, characterized in that: The intermediate tube (24) located at the distal end (22) of the circular tube body (2) is an end tube (25). The outer tube body (3) is fixedly arranged on the end tube (25) through the locking member (5).

4. The disposable anorectal stapler according to claim 3, wherein: The locking member (5) is a locking screw screwed on the outer tube body (3), and the outer tube body (3) is provided with an internally threaded hole matching therewith.

5. The disposable anorectal stapler according to claim 4, characterized in that: The outer wall of the end tube (25) is further provided with a locking groove (26) for the locking screw to extend into. The locking screw screwed on the outer tube body (3) abuts against the locking groove (26).

6. The disposable anorectal stapler according to claim 5, characterized in that: The locking groove (26) is an inclined groove, and the depth of the inclined groove gradually decreases from the proximal end (21) to the distal end (22) of the circular tube body (2).

7. The disposable anorectal stapler according to claim 5, wherein: One side of the end tube (25) close to the distal end (22) of the circular tube body (2) is further provided with a limiting plate (27). The limiting plate (27) is a square block symmetrically arranged on the end face of the end tube (25).

8. The disposable anorectal stapler according to claim 3, characterized in that: One end of a number of the intermediate tubes (24) is provided with an internal thread ring (28), and the other end is provided with an external thread ring (29). The connecting end of the inner tube body (23) and the end tube (25) is provided with an internal thread ring (28) or an external thread ring (29) adapted to the intermediate tube (24).

9. The disposable anorectal stapler according to claim 8, wherein: The inner diameters and outer diameters of the inner tube body (23), the intermediate tubes (24) and the end tube (25) are the same.

10. The disposable anorectal stapler according to claim 1, wherein: A number of notches (41) are circumferentially arranged on the flaring sleeve (4) with the center of the circular tube body (2) as the center of the circle.

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