Angle-adjustable tubular anastomat

Abstract

The utility model discloses an angle-adjustable tubular anastomat. The angle-adjustable tubular anastomat comprises a shell, a sleeve, a locking component and a limiting and locking mechanism, wherein the casing pipe is rotationally connected to the shell, end face teeth which are sequentially arranged in the circumferential direction are arranged at the end, connected with the shell, of the casing pipe, a tooth groove is formed between every two adjacent end face teeth, the locking component is slidably connected to the interior of the shell, a clamping part is arranged on the locking component, and the clamping part is matched with the tooth groove. The clamping part is used for being clamped into the tooth groove when the locking part slides towards the sleeve in place; the shape of the clamping part and the shape of the tooth groove meet the condition that when the sleeve rotates, the groove wall of the tooth groove abuts against the clamping part so as to push the locking component to move in the direction away from the sleeve and enable the clamping part to retreat from the tooth groove. The angle of the sleeve relative to the shell can be adjusted according to operation requirements, and use convenience can be improved.

Description

Technical Field

[0001] The utility model relates to a tubular stapler with an adjustable angle. Background Art

[0002] At present, tubular staplers are mainly used for end-to-end, end-to-side, and side-to-side anastomosis in digestive tract reconstruction surgeries. They mainly consist of a staple anvil, a cartridge assembly, a curved cannula, a handle, and a housing, etc. A multifunctional tubular stapler is disclosed in a Chinese patent with the publication number CN213850874U. Tubular staplers are widely used in the medical field. The shape of the cannula in the tubular stapler conforms to the natural curvature of human anatomy. However, the angle of the cannula relative to the housing in the existing tubular staplers is relatively fixed and cannot be adjusted according to the surgical needs, which will cause inconvenience to surgical operations. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a tubular stapler with an adjustable angle, which can adjust the angle of the cannula relative to the housing according to surgical needs and improve the convenience of use.

[0004] To solve the above technical problem, the technical solution of the utility model is: a tubular stapler with an adjustable angle, which includes a housing, a cannula, a locking component, and a limit locking mechanism;

[0005] The cannula is rotatably connected to the housing, and end face teeth arranged in sequence along the circumferential direction are provided on one end of the cannula connected to the housing, and tooth grooves are provided between adjacent end face teeth;

[0006] The locking component is slidably connected in the housing, and a clamping portion is provided on the locking component, and the clamping portion is used to be clamped into the tooth groove when the locking component slides towards the cannula in place;

[0007] The shape of the clamping portion and the shape of the tooth groove satisfy that when the cannula rotates, the groove wall of the tooth groove abuts against the clamping portion to push the locking component to move away from the cannula and make the clamping portion withdraw from the tooth groove;

[0008] The limit locking mechanism is connected to the housing and is used to lock the position of the locking component to limit the clamping portion from withdrawing from the tooth groove when the clamping portion is clamped in the tooth groove, and the limit locking mechanism is also used to release the position locking of the locking component.

[0009] Furthermore, the angle-adjustable tubular anastomosis device also includes an elastic member; wherein, the outer shell has an abutment portion, the elastic member is installed in the outer shell, one end of the elastic member abuts against the abutment portion, and the other end of the elastic member abuts against the locking member, and the elastic member is used to drive the locking member to slide toward the sleeve so that the engaging portion is engaged in the tooth groove.

[0010] Further, the locking component is located behind the sleeve and is slidably connected in the housing along the front-rear direction;

[0011] The engaging portion is arranged on the front end portion of the locking member;

[0012] The limit locking mechanism comprises a handle and a limit stopper;

[0013] The handle is rotatably connected to the housing and has a locked position and an unlocked position during rotation;

[0014] The limit stop block is connected to the handle, and is used to press against the rear end of the locking component when the engaging portion is engaged in the tooth groove and the handle is rotated to the locking position, thereby locking the position of the locking component to limit the engaging portion from exiting the tooth groove. The limit stop block is also used to offset from the rear end of the locking component when the handle is rotated to the unlocking position to release the position lock of the locking component.

[0015] Furthermore, the angle-adjustable tubular stapler further comprises a reset torsion spring, which is installed between the housing and the handle and is used to drive the handle to rotate to the unlocking position.

[0016] A specific shape of the tooth groove and the engaging portion is further provided. The tooth groove is a tapered groove that gradually becomes smaller from the groove opening to the groove bottom, and the engaging portion is a tapered structure that is adapted to the shape of the tooth groove.

[0017] Furthermore, the groove bottom of the tooth groove, the tooth top of the end face tooth and the top of the engaging portion are all arc structures.

[0018] A specific structure of the sleeve is further provided, the sleeve comprises a tube body and a tube head; wherein the tube head is connected to one end of the tube body, the tube head is rotatably connected to the shell, and the end face teeth are arranged on the end of the tube head.

[0019] Furthermore, an annular groove recessed radially inward is provided on the outer periphery of the tube head;

[0020] The shell is provided with a clamping block portion which protrudes radially inward and is engaged in the annular groove.

[0021] Further provide a specific structure of the tube head, the tube head comprising two semi-cylinders;

[0022] On the outer wall of the tube body, there are provided a first groove portion recessed inward in the radial direction and a first boss portion protruding outward in the radial direction;

[0023] On the inner wall of the semi-cylinder, there are provided a second boss portion adapted to the first groove portion and a second groove portion adapted to the first boss portion;

[0024] The two semi-cylinders are covered and connected to one end of the tube body, and the first boss portion is snap-fitted in the second groove portion while the second boss portion is snap-fitted in the first groove portion;

[0025] On the inner wall of the semi-cylinder, there are provided positioning bosses, and on the tube body, there are provided positioning holes corresponding to the positioning bosses one by one, and the positioning bosses are snap-fitted in the positioning holes.

[0026] Further provide a specific structure of the housing, the housing comprising a left housing and a right housing, and the left housing and the right housing are detachably connected.

[0027] After adopting the above technical solution, when it is necessary to adjust the angle of the sleeve, first release the position locking of the locking component by the limit locking mechanism so that the locking component can slide freely, and then rotate the sleeve to the required angle. When the sleeve rotates, the groove wall of the tooth groove abuts against the engaging portion and can push the locking component to move away from the sleeve, and then the engaging portion can withdraw from the tooth groove. When the sleeve rotates to the required angle, make the locking component slide towards the sleeve until it is in place, and then the engaging portion snaps into the tooth groove, and then lock the position of the locking component through the limit locking mechanism, thereby restricting the engaging portion from withdrawing from the tooth groove. At this time, the engaging portion remains in the tooth groove, making the sleeve unable to rotate, and thus limiting the angular position of the sleeve. The embodiment of the present application can adjust the angle of the sleeve relative to the housing according to the surgical needs, greatly improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of the exterior of the adjustable-angle tube-shaped stapler of the present utility model;

[0029] Figure 2 It is a schematic structural diagram of the interior of the adjustable-angle tube-shaped stapler of the present utility model;

[0030] Figure 3 It is an exploded assembly view of the adjustable-angle tube-shaped stapler of the present utility model;

[0031] Figure 4Structural schematic diagram of the handle of the adjustable-angle tubular stapler of the present utility model when in the locked position;

[0032] Figure 5 Structural schematic diagram of the handle of the adjustable-angle tubular stapler of the present utility model when in the unlocked position;

[0033] Figure 6 Exploded assembly drawing of the sleeve and the locking component of the present utility model;

[0034] Figure 7 Top view of the cooperation between the locking component and the tooth groove of the present utility model. Detailed implementation mode

[0035] In order to make the content of the present utility model easier to be clearly understood, the present utility model will be further described in detail below according to specific embodiments and in conjunction with the accompanying drawings.

[0036] As Figures 1 to 7 shown, an adjustable-angle tubular stapler includes a housing 1, a sleeve 2, a locking component 3, and a limit locking mechanism 4;

[0037] The sleeve 2 is rotatably connected to the housing 1, and end face teeth 5 arranged in sequence along the circumferential direction are provided on one end of the sleeve 2 connected to the housing 1, and tooth grooves 6 are provided between adjacent end face teeth 5;

[0038] The locking component 3 is slidably connected in the housing 1, and a clamping portion 7 is provided on the locking component 3, and the clamping portion 7 is used to be clamped into the tooth groove 6 when the locking component 3 slides towards the sleeve 2 and reaches the position;

[0039] The shape of the clamping portion 7 and the shape of the tooth groove 6 satisfy that when the sleeve 2 rotates, the groove wall of the tooth groove 6 abuts against the clamping portion 7 to push the locking component 3 to move away from the sleeve 2 and make the clamping portion 7 withdraw from the tooth groove 6;

[0040] The limiting and locking mechanism 4 is connected to the housing 1 and is used to lock the position of the locking component 3 when the engaging portion 7 is engaged in the tooth groove 6 to limit the engaging portion 7 from exiting the tooth groove 6. The limiting and locking mechanism 4 is also used to release the position lock of the locking component 3. Specifically, when the angle of the sleeve 2 needs to be adjusted, first, the limiting and locking mechanism 4 releases the position lock of the locking component 3 so that the locking component 3 can slide freely. Then, the sleeve 2 is rotated to the required angle. When the sleeve 2 rotates, the groove wall of the tooth groove 6 abuts against the engaging portion 7 and can push the locking component 3 to move away from the sleeve 2, thereby enabling the engaging portion 7 to exit the tooth groove 6. When the sleeve 2 rotates to the required angle, the locking component 3 slides towards the sleeve 2 until it is in place, so that the engaging portion 7 is engaged in the tooth groove 6. Then, the position of the locking component 3 is locked by the limiting and locking mechanism 4, thereby restricting the engaging portion 7 from exiting the tooth groove 6. At this time, the engaging portion 7 remains in the tooth groove 6, making the sleeve 2 unable to rotate, thereby limiting the angular position of the sleeve 2. The embodiment of the present application can adjust the angle of the sleeve 2 relative to the housing 1 according to the surgical needs, greatly improving the convenience of use.

[0041] As Figures 2 to 6 shown, the adjustable-angle tubular stapler may further include an elastic member 8. Among them, the housing 1 may have an abutting portion 9. The elastic member 8 is installed in the housing 1. One end of the elastic member 8 abuts against the abutting portion 9, and the other end of the elastic member 8 abuts against the locking component 3. The elastic member 8 is used to drive the locking component 3 to slide towards the sleeve 2, thereby enabling the engaging portion 7 to be engaged in the tooth groove 6. Specifically, the elastic member 8 always exerts a thrust towards the sleeve 2 on the locking component 3. Therefore, the engaging portion 7 on the locking component 3 always abuts against the end face teeth 5 on the sleeve 2. When the sleeve 2 rotates, the groove wall of the tooth groove 6 abuts against the engaging portion 7 and can push the locking component 3 to move away from the sleeve 2. At this time, the elastic member 8 is compressed and the engaging portion 7 exits the tooth groove 6. When the engaging portion 7 slides over the tooth crest of the end face teeth 5, the engaging portion 7 will be pushed by the elastic member 8 and engaged in the next tooth groove 6. In this embodiment, a receiving hole 10 is provided in the locking component 3, and a part of the elastic member 8 is inserted into the receiving hole 10. The elastic member 8 can be a spring.

[0042] As Figures 1 to 7 shown, the locking component 3 is located behind the sleeve 2 and is slidably connected in the housing 1 in the front-rear direction;

[0043] The engaging portion 7 is provided at the front end of the locking component 3;

[0044] The position limiting locking mechanism 4 is, for example but not limited to, the following structure, which includes a handle 11 and a position limiting block 12;

[0045] The handle 11 is rotatably connected to the housing 1 and has a locked position and an unlocked position during the rotation process;

[0046] The limit stopper 12 is connected to the handle 11. The limit stopper 12 is used to press against the rear end of the locking member 3 when the engaging portion 7 is engaged in the tooth groove 6 and the handle 11 is rotated to the locking position, thereby locking the position of the locking member 3 to limit the engaging portion 7 from exiting the tooth groove 6. The limit stopper 12 is also used to stagger with the rear end of the locking member 3 when the handle 11 is rotated to the unlocking position to release the position locking of the locking member 3. Specifically, the locking member 3 moves forward to the position under the drive of the elastic member 8 and the engaging portion 7 is engaged in the tooth groove 6. When the position of the locking member 3 needs to be locked, the handle 11 is rotated to the locking position. At this time, the limit stopper 12 on the handle 11 presses against the rear end of the locking member 3, so that the locking member 3 cannot retreat, and the engaging portion 7 cannot exit the tooth groove 6. Therefore, the sleeve 2 cannot rotate, thereby limiting the angle position of the sleeve 2. When the position lock needs to be released, the handle 11 is rotated to the unlocking position. At this time, the limit stopper 12 is offset from the rear end of the locking component 3, and the limit stopper 12 can retreat to allow the engaging portion 7 to exit the tooth groove 6. At this time, when the sleeve 2 is rotated, the groove wall of the tooth groove 6 abuts against the engaging portion 7 and can push the locking component 3 to move away from the sleeve 2, thereby allowing the engaging portion 7 to exit from the tooth groove 6, so that the sleeve 2 can rotate freely.

[0047] Specifically, the limit stop block 12 may also be provided with an inclined portion. In some embodiments, the elastic member 8 may not be installed. During the rotation of the handle 11 from the unlocking position to the locking position, the inclined portion may abut against the rear end of the locking component 3 to drive the locking component 3 to move forward toward the sleeve 2.

[0048] like Figure 2 , 3 As shown, the angle-adjustable tubular stapler may further include a reset torsion spring 13, which is installed between the housing 1 and the handle 11 and is used to drive the handle 11 to rotate to the unlocked position; specifically, when the handle 11 is released, the reset torsion spring 13 can drive the handle 11 to automatically reset to the unlocked position; further specifically, a sliding channel 14 extending in the front-to-back direction is provided in the housing 1, and the locking component 3 is slidably arranged in the sliding channel 14.

[0049] As Figure 6 , 7 shown, the tooth groove 6 is a conical groove that gradually becomes smaller from the groove opening to the groove bottom, the engaging portion 7 is a conical structure adapted to the shape of the tooth groove 6, and the groove bottom of the tooth groove 6, the tooth top of the end face teeth 5, and the top of the engaging portion 7 are all arc structures. The engaging portion 7 and the tooth groove 6 of this shape enable the engaging portion 7 to smoothly withdraw from one tooth groove 6 and engage with the next tooth groove 6 when the sleeve 2 rotates.

[0050] As Figures 1 to 7 shown, the sleeve 2 may include a tube body 15 and a tube head 16; wherein, the tube head 16 is connected to one end of the tube body 15, the tube head 16 is rotatably connected to the housing 1, and the end face teeth 5 are provided on the end of the tube head 16.

[0051] As Figures 2 to 7 shown, a ring groove 17 is provided on the outer peripheral portion of the tube head 16 and is recessed radially inward;

[0052] A clamping block portion 18 is provided on the housing 1 and protrudes radially inward and is fitted and clamped in the ring groove 17, so that the tube head 16 can be rotatably connected to the housing 1.

[0053] As Figure 6 , 7 shown, the tube head 16 may include two semi-cylinders 19;

[0054] A first groove portion 20 recessed radially inward and a first boss portion 21 protruding radially outward are provided on the outer wall of the tube body 15;

[0055] A second boss portion 22 adapted to the first groove portion 20 and a second groove portion 23 adapted to the first boss portion 21 are provided on the inner wall of the semi-cylinder 19;

[0056] The two semi-cylinders 19 are wrapped and connected to one end of the tube body 15, and the first boss portion 21 is clamped in the second groove portion 23 and the second boss portion 22 is clamped in the first groove portion 20;

[0057] A positioning boss 24 is provided on the inner wall of the semi-cylinder 19, and a positioning hole 25 corresponding to the positioning boss 24 one by one is provided on the tube body 15. The positioning boss 24 is clamped in the positioning hole 25 to limit the circumferential position between the tube body 15 and the tube head 16; specifically, a part of the ring groove 17 is provided on each of the two semi-cylinders 19, and part of the end face teeth 5 are provided on each of the two semi-cylinders 19.

[0058] As Figure 1 , 3As shown, the housing 1 includes a left housing 26 and a right housing 27. The left housing 26 and the right housing 27 are detachably connected, and a part of the latch portion 18 is provided on each of the left housing 26 and the right housing 27.

[0059] In summary, when the angle of the sleeve 2 needs to be adjusted, first release the position locking of the locking member 3 by the limit locking mechanism 4 so that the locking member 3 can slide freely. Then rotate the sleeve 2 to the required angle. When the sleeve 2 rotates, the groove wall of the tooth groove 6 abuts against the engaging portion 7 and can push the locking member 3 to move away from the sleeve 2, thereby enabling the engaging portion 7 to withdraw from the tooth groove 6. After the sleeve 2 rotates to the required angle, slide the locking member 3 towards the sleeve 2 until it is in place, so that the engaging portion 7 snaps into the tooth groove 6. Then lock the position of the locking member 3 through the limit locking mechanism 4, thereby restricting the engaging portion 7 from withdrawing from the tooth groove 6. At this time, the engaging portion 7 remains in the tooth groove 6, making the sleeve 2 unable to rotate, and thus limiting the angular position of the sleeve 2. The embodiment of the present application can adjust the angle of the sleeve 2 relative to the housing 1 according to the surgical needs, greatly improving the convenience of use.

[0060] In the specific embodiments described above, the technical problems solved, technical solutions, and beneficial effects of the present invention have been further described in detail. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable-angle tubular stapler, characterized in that, It comprises a housing (1), a sleeve (2), a locking component (3) and a position limiting locking mechanism (4); The sleeve (2) is rotatably connected to the housing (1); an end portion of the sleeve (2) connected to the housing (1) is provided with end face teeth (5) arranged in sequence along the circumferential direction; tooth grooves (6) are provided between adjacent end face teeth (5); The locking component (3) is slidably connected in the housing (1), and a snap-fitting portion (7) is provided on the locking component (3), and the snap-fitting portion (7) is used to snap into the tooth groove (6) when the locking component (3) slides into place toward the sleeve (2); The shape of the engaging portion (7) and the shape of the tooth groove (6) satisfy the following conditions: when the sleeve (2) rotates, the groove wall of the tooth groove (6) abuts against the engaging portion (7) to push the locking component (3) to move in a direction away from the sleeve (2) and to make the engaging portion (7) withdraw from the tooth groove (6); The limit locking mechanism (4) is connected to the housing (1) and is used to lock the position of the locking component (3) when the engaging portion (7) is engaged in the tooth groove (6) to limit the engaging portion (7) from withdrawing from the tooth groove (6). The limit locking mechanism (4) is also used to release the position lock of the locking component (3).

2. The adjustable-angle tubular stapler according to claim 1, wherein It also includes an elastic member (8); wherein the housing (1) has an abutment portion (9), the elastic member (8) is installed in the housing (1), one end of the elastic member (8) abuts against the abutment portion (9), and the other end of the elastic member (8) abuts against the locking member (3), and the elastic member (8) is used to drive the locking member (3) to slide toward the sleeve (2) so as to cause the engaging portion (7) to engage in the tooth groove (6).

3. The angle-adjustable tubular stapler according to claim 2, characterized in that: The locking component (3) is located behind the sleeve (2) and is slidably connected in the housing (1) along the front-rear direction; The engaging portion (7) is arranged on the front end portion of the locking component (3); The position limiting locking mechanism (4) comprises a handle (11) and a position limiting block (12); The handle (11) is rotatably connected to the housing (1) and has a locked position and an unlocked position during rotation; The limit stopper (12) is connected to the handle (11). The limit stopper (12) is used to abut against the rear end of the locking component (3) when the engaging portion (7) is engaged in the tooth groove (6) and the handle (11) is rotated to the locking position, thereby locking the position of the locking component (3) to restrict the engaging portion (7) from exiting the tooth groove (6). The limit stopper (12) is also used to stagger with the rear end of the locking component (3) when the handle (11) is rotated to the unlocking position to release the position lock of the locking component (3).

4. The adjustable-angle tubular stapler according to claim 3, wherein It also comprises a return torsion spring (13), which is installed between the housing (1) and the handle (11) and is used to drive the handle (11) to rotate to the unlocking position.

5. The adjustable-angle tubular stapler according to claim 1, wherein, The alveolar groove (6) is a conical groove that gradually decreases from the groove opening to the groove bottom, and the engaging portion (7) is a conical structure adapted to the shape of the alveolar groove (6).

6. The adjustable-angle tubular stapler according to claim 5, wherein, The bottom of the alveolar groove (6), the crest of the end face teeth (5), and the top of the engaging portion (7) are all arc structures.

7. The adjustable-angle tubular stapler according to claim 1, wherein The sleeve (2) includes a pipe body (15) and a pipe head (16); wherein, the pipe head (16) is connected to one end of the pipe body (15), the pipe head (16) is rotatably connected to the outer shell (1), and the end face teeth (5) are arranged on the end of the pipe head (16).

8. The adjustable-angle tubular stapler according to claim 7, wherein A ring groove (17) that is recessed radially inward is provided on the outer peripheral portion of the pipe head (16); A clamping block portion (18) that protrudes radially inward and is engaged with the ring groove (17) is provided on the outer shell (1).

9. The adjustable-angle tubular stapler according to claim 7, wherein The pipe head (16) includes two semi-cylinders (19); A first groove portion (20) that is recessed radially inward and a first boss portion (21) that protrudes radially outward are provided on the outer wall of the pipe body (15); A second boss portion (22) adapted to the first groove portion (20) and a second groove portion (23) adapted to the first boss portion (21) are provided on the inner wall of the semi-cylinder (19); The two semi-cylinders (19) are wrapped and connected to one end of the pipe body (15), and the first boss portion (21) is engaged in the second groove portion (23) while the second boss portion (22) is engaged in the first groove portion (20); A positioning boss (24) is provided on the inner wall of the semi-cylinder (19), a positioning hole (25) corresponding to the positioning boss (24) one by one is provided on the pipe body (15), and the positioning boss (24) is engaged in the positioning hole (25).

10. The adjustable-angle tubular stapler according to claim 1, characterized in that, The outer shell (1) includes a left shell (26) and a right shell (27), and the left shell (26) is detachably connected to the right shell (27).

Images