A support structure for a stapler and its power output mechanism.

Abstract

This invention relates to the field of anastomosis device technology, and in particular to an anastomosis device and a support structure for its power output mechanism. It includes an anti-torsion bracket disposed within the anastomosis device housing, located at the power output end of the anastomosis device. The anti-torsion bracket has a first support hole, a second support hole, and a lead screw positioning hole. The first support hole is located at the lower part of the anti-torsion bracket to support the support end of a primary gear. The second support hole is located in the middle of the anti-torsion bracket to support a primary lead screw and a secondary gear. The lead screw positioning hole is located at the upper part of the anti-torsion bracket, and a secondary lead screw passes through the lead screw positioning hole. This invention integrates the support and fixing functions of the primary lead screw, secondary lead screw, secondary gear, and primary gear into the anti-torsion bracket, simplifying the internal structure of the anastomosis device and effectively supporting the various components of the power output mechanism, preventing damage or deformation to these components due to torsional force release.

Description

Technical Field

[0001] This invention relates to the field of anastomosis device technology, and in particular to an anastomosis device and a support structure for the power output mechanism of the anastomosis device. Background Technology

[0002] Anastomosing devices are medical devices used to replace manual suturing, offering advantages such as faster suturing and simpler operation. Anastomosing devices can be categorized into round devices, laparoscopic devices, and curved devices, with the appropriate type selected based on the patient's needs.

[0003] In existing technology, there are staplers specifically designed for large tissues or organs. While their operating principle is similar to traditional laparoscopic staplers, the structure of the staple cartridge assembly at the front end differs significantly, and the overall size is considerably larger, making them easily distinguishable. During operation, this large-volume stapler uses a motor to drive a lead screw, which in turn drives a cutting blade to cut the large tissue or organ. Simultaneously, the staple cartridge assembly sutures the remaining tissue or organ. The motor-driven lead screw transmission generates significant torsional force during cutting and suturing. This force is released to the stapler's power output mechanism and then transmitted to the stapler housing. Because the stapler housing is made of plastic, its support strength for the power output mechanism is relatively weak. Therefore, this torsional force can easily cause structural damage to the stapler housing and deformation of the power output mechanism, affecting the stability of the stapler's power output and disrupting normal operation during the cutting and anastomosis process. Summary of the Invention

[0004] This application addresses the shortcomings of the existing manufacturing technology by providing a support structure for a stapler and its power output mechanism. This structure effectively supports the various components of the power output mechanism, preventing damage or deformation to these components caused by the release of torsional force, thus ensuring the usability of the stapler and the effectiveness of the surgery.

[0005] The technical solution adopted in this invention is as follows:

[0006] A support structure for the power output mechanism of a stapler includes an anti-torsion bracket disposed within the stapler housing. The anti-torsion bracket is located at the power output end of the stapler. The anti-torsion bracket is provided with a first support hole, a second support hole, and a lead screw positioning hole. The first support hole is located at the lower part of the anti-torsion bracket to support the support end of a primary gear. The second support hole is located in the middle part of the anti-torsion bracket to support a primary lead screw and a secondary gear. The positions of the first and second support holes are configured to ensure that the primary and secondary gears are meshed. The lead screw positioning hole is located at the upper part of the anti-torsion bracket, and a secondary lead screw is inserted through the lead screw positioning hole.

[0007] Furthermore, the primary gear includes a support end and a drive end. The support end of the primary gear is located in the first support hole, and the drive end of the primary gear is connected to the drive end of the first motor through the first coupling.

[0008] Furthermore, the secondary gear includes a first support end and a second support end. The first support end of the secondary gear is located in the second support hole. The first support end of the secondary gear is connected to the drive end of the primary screw for transmission. A gear bracket is provided on one side of the second support end of the secondary gear. A gear positioning groove is provided inside the gear bracket. The gear positioning groove forms support for the second support end of the secondary gear. The side of the gear bracket positions and contacts the second support end of the secondary gear.

[0009] Furthermore, the second support hole is a stepped hole, which includes a first hole segment and a second hole segment arranged in sequence. The diameter of the first hole segment is smaller than the diameter of the second hole segment. The connection between the first hole segment and the second hole segment forms a positioning end face. The first support end of the secondary gear is located in the second hole segment and the side of the first support end of the secondary gear is in positioning contact with the positioning end face.

[0010] Furthermore, a bushing is installed inside the second support hole, and the drive end of the first-stage lead screw passes through the bushing and connects to the first support end of the second-stage gear.

[0011] Furthermore, the drive end of the secondary lead screw is connected to the drive end of the second motor via a second coupling, and the support end of the secondary lead screw is rotatably connected inside the anastomosis device housing.

[0012] Furthermore, the anti-torsion bracket includes an upper bracket and a lower bracket that are arranged correspondingly at the top and bottom.

[0013] Furthermore, the first support hole includes a semi-circular first upper support hole disposed on the upper bracket and a semi-circular first lower support hole disposed on the lower bracket. The first upper support hole and the first lower support hole are joined together to form a circular first support hole. The second support hole includes a semi-circular second upper support hole disposed on the upper bracket and a semi-circular second lower support hole disposed on the lower bracket. The second upper support hole and the second lower support hole are joined together to form a circular second support hole.

[0014] Furthermore, the lead screw positioning hole includes a semi-circular upper lead screw positioning hole set on the upper bracket and a semi-circular lower lead screw positioning hole set on the lower bracket. The upper lead screw positioning hole and the lower lead screw positioning hole are joined together to form a circular lead screw positioning hole.

[0015] A stapler includes a stapler housing and a support structure for a stapler power output mechanism disposed within the stapler housing.

[0016] The beneficial effects of this invention are as follows:

[0017] This invention integrates the support and fixing functions of the primary lead screw, secondary lead screw, secondary gear, and primary gear into an anti-torsion bracket, simplifying the internal structure of the stapler. It effectively supports the various components of the power output mechanism, preventing damage or deformation caused by torsional force release, thus ensuring the usability of the stapler and the surgical outcome. The second support hole on the anti-torsion bracket not only provides support for the secondary gear but also controls the secondary gear and secondary lead screw from moving back and forth under force, ensuring stability during cutting. The first support hole on the anti-torsion bracket provides stable support for the primary gear. The lead screw positioning hole on the anti-torsion bracket prevents deformation of the secondary lead screw under torsional force, ensuring normal transmission of the secondary lead screw. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the installation of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the present invention.

[0020] Figure 3 This is a structural diagram of the power output mechanism of the present invention.

[0021] Figure 4 This is a structural diagram of the anti-torsion bracket of the present invention.

[0022] Figure 5 This is a diagram of the internal structure of the anti-torsion bracket of the present invention.

[0023] The components are as follows: 1. Primary lead screw; 2. First coupling; 3. First motor; 4. Secondary lead screw; 5. Second coupling; 6. Second motor; 7. Primary gear; 8. Secondary gear; 9. Anti-torsion bracket; 10. Mounting plate; 11. Motor fixing plate; 12. Slot; 13. Anastomosing device housing; 14. Gear bracket; 15. First hole section; 16. Second hole section; 17. Bushing; 18. Upper bracket; 19. Lower bracket; 20. First support hole; 21. Second support hole; 22. Lead screw positioning hole. Detailed Implementation

[0024] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0025] like Figure 1 and Figure 2As shown, a support structure for the power output mechanism of a stapler includes an anti-torsion bracket 9 disposed within the stapler housing 13, located at the power output end of the stapler. The stapler housing 13 houses a power output mechanism comprising a first motor 3, a second motor 6, a primary lead screw 1, a secondary lead screw 4, a primary gear 7, a secondary gear 8, a first coupling 2, and a second coupling 5. The primary lead screw 1, secondary lead screw 4, primary gear 7, and secondary gear 8 are supported by the anti-torsion bracket 9.

[0026] like Figure 1 and Figure 2 As shown, the anti-torsion bracket 9 is detachably connected to the mounting plate 10 by a plurality of bolts, and the mounting plate 10 is detachably connected to the anastomosis device housing 13 by a plurality of bolts.

[0027] like Figure 3 and Figure 4 As shown, the anti-torsion bracket 9 is provided with a first support hole 20, a second support hole 21, and a lead screw positioning hole 22. The first support hole 20 is located at the lower part of the anti-torsion bracket 9 to support the support end of the primary gear 7. The second support hole 21 is located in the middle part of the anti-torsion bracket 9 to support the primary lead screw 1 and the secondary gear 8. The positions of the first support hole 20 and the second support hole 21 ensure that the primary gear 7 and the secondary gear 8 are meshed. The lead screw positioning hole 22 is located at the upper part of the anti-torsion bracket 9, and the secondary lead screw 4 is inserted through the lead screw positioning hole 22 and supported by the lead screw positioning hole 22.

[0028] like Figure 3 As shown, the primary gear 7 includes a support end and a drive end. The support end of the primary gear 7 is located in the first support hole 20. The drive end of the primary gear 7 is connected to the drive end of the first motor 3 through the first coupling 2. When the first motor 3 is working, it drives the primary gear 7 to rotate through the first coupling 2. The first motor 3 is detachably connected to the motor mounting plate 11 by multiple bolts. The motor mounting plate 11 is inserted into the slot 12, which is located in the anastomosis device housing 13.

[0029] like Figure 3 As shown, the secondary gear 8 includes a first support end and a second support end. The first support end of the secondary gear 8 is located in the second support hole 21 and is connected to the drive end of the primary lead screw 1 for transmission. A gear bracket 14 is provided on one side of the second support end of the secondary gear 8. A gear positioning groove is provided inside the gear bracket 14. The gear positioning groove provides support for the second support end of the secondary gear 8. The gear positioning groove, together with the second support hole 21, provides balanced support for both ends of the secondary gear 8, making the secondary gear 8 more stable. The side of the gear bracket 14 contacts the second support end of the secondary gear 8, forming an axial positioning of the secondary gear 8 and preventing axial movement of the secondary gear 8 during transmission.

[0030] like Figure 5 As shown, the second support hole 21 is a stepped hole, which includes a first hole segment 15 and a second hole segment 16 arranged sequentially. The diameter of the first hole segment 15 is smaller than the diameter of the second hole segment 16. Due to the difference in diameter, the connection between the first hole segment 15 and the second hole segment 16 forms a positioning end face. The first support end of the secondary gear 8 is located inside the second hole segment 16 and the side of the first support end of the secondary gear 8 is in positioning contact with the positioning end face, thereby forming an axial positioning of the secondary gear 8 and preventing the secondary gear 8 from moving axially during the transmission process.

[0031] like Figure 3 and Figure 4 As shown, a bushing 17 is provided in the second support hole 21. The drive end of the first-stage lead screw 1 passes through the bushing 17 and is connected to the first support end of the second-stage gear 8. The bushing 17 can reduce the wear of the drive end of the first-stage lead screw 1 in the second support hole 21.

[0032] like Figure 3 and Figure 4 As shown, the drive end of the secondary lead screw 4 is connected to the drive end of the second motor 6 via the second coupling 5, and the support end of the secondary lead screw 4 is rotatably connected inside the anastomosis device housing 13. The second motor 6 is detachably connected to the motor mounting plate 11 via multiple bolts, and the motor mounting plate 11 provides stable support for the second motor 6.

[0033] like Figure 4 and Figure 5 As shown, the anti-torsion bracket 9 includes an upper bracket 18 and a lower bracket 19 arranged vertically and vertically, which are connected into one piece by multiple bolts.

[0034] The first support hole 20 includes a semi-circular first upper support hole provided on the upper bracket 18 and a semi-circular first lower support hole provided on the lower bracket 19. The first upper support hole and the first lower support hole are connected vertically to form a circular first support hole 20.

[0035] The second support hole 21 includes a semi-circular second upper support hole provided on the upper bracket 18 and a semi-circular second lower support hole provided on the lower bracket 19. The second upper support hole and the second lower support hole are joined together to form a circular second support hole 21.

[0036] The lead screw positioning hole 22 includes a semi-circular upper lead screw positioning hole provided on the upper bracket 18 and a semi-circular lower lead screw positioning hole provided on the lower bracket 19. The upper lead screw positioning hole and the lower lead screw positioning hole are joined together to form a circular lead screw positioning hole 22.

[0037] The anastomosis device used in this invention is for the anastomosis of larger human organs and tissues. This is because such larger organs and tissues often require significant power to complete the anastomosis, resulting in substantial torsional force during transmission. The support structure of this invention effectively supports the various components of the power output mechanism, preventing damage or deformation caused by the torsional force, thus ensuring the usability of the anastomosis device and the surgical outcome. The support structure of this invention mainly consists of an anti-torsion bracket 9. The second support hole 21 on the anti-torsion bracket 9 provides stable support for the secondary gear 8 and also controls the movement of the secondary gear 8 and the secondary lead screw 4, preventing them from moving back and forth under stress, thus ensuring stability during cutting. The first support hole 20 on the anti-torsion bracket 9 provides stable support for the primary gear 7; the lead screw positioning hole 22 on the anti-torsion bracket 9 prevents deformation of the secondary lead screw 4 under torsional force, ensuring normal transmission of the secondary lead screw 4. The second support hole 21 on the anti-torsion bracket 9 not only provides support for the secondary gear 8, but also controls the secondary gear 8 and the secondary lead screw 4 to not move back and forth under the action of force during movement, thus ensuring the stability during cutting.

[0038] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A support structure for a power output mechanism of a surgical stapler, characterized in that: The device includes an anti-torsion bracket disposed within the anastomosis device housing. The anti-torsion bracket is located at the power output end of the anastomosis device. The anti-torsion bracket is provided with a first support hole, a second support hole, and a lead screw positioning hole. The first support hole is located at the lower part of the anti-torsion bracket to support the support end of the primary gear. The second support hole is located in the middle part of the anti-torsion bracket to support the primary lead screw and the secondary gear. The positions of the first and second support holes are configured to ensure that the primary gear and the secondary gear are meshed. The lead screw positioning hole is located at the upper part of the anti-torsion bracket, and the secondary lead screw passes through the lead screw positioning hole. The secondary gear includes a first support end and a second support end. The first support end of the secondary gear is located in the second support hole and is connected to the drive end of the primary lead screw for transmission. A gear bracket is provided on one side of the second support end of the secondary gear, and a gear positioning groove is provided inside the gear bracket. The gear positioning groove provides support for the second support end of the secondary gear, and the side of the gear bracket is in positioning contact with the second support end of the secondary gear. The second support hole is a stepped hole, which includes a first hole segment and a second hole segment arranged sequentially. The diameter of the first hole segment is smaller than the diameter of the second hole segment. The connection between the first hole segment and the second hole segment forms a positioning end face. The first support end of the secondary gear is located in the second hole segment, and the side of the first support end of the secondary gear is in positioning contact with the positioning end face. A bushing is provided inside the second support hole, and the drive end of the primary lead screw passes through the bushing and connects to the first support end of the secondary gear.

2. The support structure for the power output mechanism of a stapler as described in claim 1, characterized in that: The primary gear includes a support end and a drive end. The support end of the primary gear is located in the first support hole, and the drive end of the primary gear is connected to the drive end of the first motor through the first coupling.

3. The support structure for the power output mechanism of a stapler as described in claim 2, characterized in that: The drive end of the secondary lead screw is connected to the drive end of the second motor via a second coupling, and the support end of the secondary lead screw is rotatably connected inside the anastomosis device housing.

4. The support structure for the power output mechanism of a stapler as described in claim 3, characterized in that: The anti-torsion bracket includes an upper bracket and a lower bracket arranged correspondingly at the top and bottom.

5. The support structure for the power output mechanism of a surgical anastomosis device as described in claim 4, characterized in that: The first support hole includes a semi-circular first upper support hole disposed on the upper bracket and a semi-circular first lower support hole disposed on the lower bracket. The first upper support hole and the first lower support hole are joined together to form a circular first support hole. The second support hole includes a semi-circular second upper support hole disposed on the upper bracket and a semi-circular second lower support hole disposed on the lower bracket. The second upper support hole and the second lower support hole are joined together to form a circular second support hole.

6. The support structure for the power output mechanism of a stapler as described in claim 5, characterized in that: The lead screw positioning hole includes a semi-circular upper lead screw positioning hole set on the upper bracket and a semi-circular lower lead screw positioning hole set on the lower bracket. The upper lead screw positioning hole and the lower lead screw positioning hole are joined together to form a circular lead screw positioning hole.

7. A stapler, characterized in that: It includes a stapler housing, wherein a support structure for the stapler power output mechanism as described in any one of claims 1-6 is provided inside the stapler housing.

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