Auxiliary device for artery blood vessel anastomosis adjustment

Abstract

The invention discloses an artery blood vessel anastomosis adjusting auxiliary device, and belongs to the technical field of medical instruments, the artery blood vessel anastomosis adjusting auxiliary device comprises a blood vessel clamp, a connecting rod main body, a movable rod, two rapid clamping buckles, a limiter control button, a position limiter and a pressure air bag, the quick clamping buckle comprises an elastic clamping plate arranged inside and a clamping unlocking button arranged outside, the movable rod is nested in the connecting rod main body to form a telescopic structure, the position limiter comprises a limiting tooth groove and an opening and closing clamping tooth block, the opening and closing clamping tooth block is fixedly connected with a limiting spring arranged in the position limiter, and the limiting tooth groove is fixedly connected with the opening and closing clamping tooth block. And the limiter control button and the opening and closing clamping tooth block are mechanically and movably connected through a limiter pushing rod and used for forming a control mechanism of pressing unlocking and loosening locking, and the limiting device has the technical effects that rapid clamping, precise limiting and controllable speed are achieved at the same time.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to an auxiliary device for adjusting arterial anastomosis. Background Technology

[0002] In animal medical experiments (such as vascular anastomosis and organ transplantation experiments) and clinical surgery, arterial anastomosis is a crucial and core procedure. Its core requirements are maintaining tension-free suturing of the vessel, precise alignment and stable fixation of both ends, and avoiding vessel twisting, displacement, or excessive traction. Otherwise, anastomosis failure can easily lead to serious complications such as anastomotic stenosis, bleeding, or thrombosis. In current techniques, arterial anastomosis typically involves directly holding both ends of the vessel with arterial clamps or using a simple stent-linkage structure to support the clamps. However, these methods have the following significant drawbacks: Traditional vascular clamps and connecting rods are mostly assembled in a fixed position, and the position of the vascular clamp is always fixed. When encountering a damaged or ruptured blood vessel, or actively cutting the blood vessel for end-to-end anastomosis, the blood vessel will spring back a certain distance. When vascular anastomosis is required, the position of the vascular clamps at both ends of the connecting rod needs to be readjusted. Existing auxiliary devices lack a reliable position movement limiting mechanism, the spacing between vascular clamps depends on the doctor's feel for adjustment, cannot correct end-to-end misalignment, the operation steps are cumbersome, it is not possible to quickly adapt to different sizes of arterial vascular clamps, and it is also difficult to adjust the fixation state in real time according to the surgical scenario.

[0003] To address this, Chinese patent CN112971905B discloses an auxiliary fixation device for arterial anastomosis, mainly composed of a fixation plate, a sliding groove, a locking groove, a fixation seat, a limiting handle, a T-shaped slider, a spring, a multi-angle limiting plate, and a clamp. This device fixes the arterial clamp through a double-clamping structure, uses the sliding groove and locking groove to allow the fixation seat to slide left and right to adjust the longitudinal position of the vascular clamp, and achieves angle rotation adjustment by pulling the multi-angle limiting plate forward. However, this device only focuses on physically fixing the arterial clamp, adjusting its basic position, and adjusting its angle through mechanical structures, primarily addressing the issues of clamping stability and initial adjustability. It cannot simultaneously solve the three core problems of "rapid clamping," "precise correction of misalignment," and "rate control." Designed only for a single pain point, it cannot meet the comprehensive requirements of arterial anastomosis surgery for efficiency, precision, and safety. Therefore, there is an urgent need for an arterial anastomosis adjustment auxiliary device with optimized structure, convenient operation, and guaranteed surgical precision. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides an auxiliary device for adjusting arterial anastomosis, which has the advantages of simultaneously achieving rapid clamping, precise positioning, and controllable speed. It solves the problems of cumbersome vascular clamping and disassembly, low spacing adjustment accuracy, and easy damage to blood vessels due to lack of speed control in the prior art.

[0005] This invention is implemented as follows: an auxiliary device for adjusting arterial anastomosis includes a vascular clamp, a connecting rod body, a movable rod, a quick-clamping buckle, a limiter control button, a position limiter, and a pressure balloon. The quick-clamping buckle is configured as two clamps for holding and fixing the handle of the vascular clamp, and is respectively fixed to the right end of the connecting rod body and the left end of the movable rod. The quick-clamping buckle includes an internal elastic clamping plate and an external clamping / unlocking button. The movable rod is nested inside the connecting rod body to form a telescopic structure. The position limiter includes a limiting groove on the inner wall of the connecting rod body and an opening / closing locking tooth block on the outer wall of the movable rod. When locked, the limiting groove and the opening / closing locking tooth block precisely engage. The opening / closing locking tooth block is fixedly connected to a limiting spring built into the position limiter. The limiter control button and the opening / closing locking tooth block are mechanically connected via a limiter push rod, forming a "press to unlock - release to lock" control mechanism.

[0006] As a preferred embodiment of the present invention, the elastic clamp adopts an arc-shaped fitting design to adapt to arterial clamp handles of different sizes, and the quick-clamping buckle also includes a clamping port at its bottom for facilitating the insertion of the clamp handle.

[0007] With this setup, pressing the clamp unlock button during clamping opens the elastic clamp. After inserting the vascular clamp, releasing the clamp unlock button causes the elastic clamp to spring back and automatically clamp the vascular clamp. To remove the clamp, simply press the clamp unlock button to unlock it. No additional operation is required, making it quick and convenient.

[0008] As a preferred embodiment of the present invention, a telescopic adjustment column is threadedly inserted into the top of the connecting rod body corresponding to the vascular clamp.

[0009] With this setting, the telescopic adjustment column can be turned up and down to limit the telescopic position of the vascular clamp handle. That is, the handle of the arterial vascular clamp can move telescopically along the inside of the quick-clamping buckle, so that the vascular clamp can extend and retract at the clamping port to correct end misalignment, which further improves the accuracy and flexibility of adjustment, and greatly improves the positioning accuracy and usage efficiency of the arterial vascular clamp.

[0010] As a preferred embodiment of the present invention, both the movable rod and the connecting rod body are hollow tube structures made of medical-grade stainless steel, and the outer wall of the connecting rod body is provided with scale markings.

[0011] This design utilizes medical-grade stainless steel, which possesses excellent biocompatibility and corrosion resistance, meeting the hygiene requirements of medical settings. The hollow tube structure maintains structural strength, reduces weight, facilitates the extension and retraction of the movable rod, and is easy to operate by hand. The scale markings help doctors intuitively read the distance between the vascular clamps, improving the accuracy of adjustment.

[0012] In a preferred embodiment of the present invention, the pressure bladder is fitted at the nested connection between the connecting rod body and the movable rod. The pressure bladder is made of medical-grade polyurethane filled with silicone foam damping material. The pressure bladder fits tightly with the movable rod. When the movable rod extends or retracts, the contraction rate is controlled by the damping force to avoid excessive instantaneous adjustment that could damage blood vessels.

[0013] This setup allows for the replacement of balloons with different elastic coefficients according to surgical needs, adapting to the different rate requirements of vascular anastomosis in small and large animals. From a mechanical structure perspective, it avoids operational errors caused by manual rate control by doctors, greatly reducing the risk of damage to the vascular endothelium. Furthermore, the damping force is gentle, providing a comfortable operating experience and improving the safety and controllability of the surgery.

[0014] In a preferred embodiment of the present invention, the opening and closing locking tooth block is composed of two separate tooth blocks, one end of which is rotatably connected to the other. The rotating end of the opening and closing locking tooth block is connected and fixed to a limiting spring. The inner sides of the opening and closing ends of the opening and closing locking tooth block are connected and fixed to each other by an auxiliary spring. The limiting spring is used to provide a continuous preload to ensure that the opening and closing locking tooth block fits tightly with the limiting tooth groove, so that there is no loosening after the movable rod is locked.

[0015] With this design, the rotating connection structure of the split toothed block, in conjunction with the auxiliary spring, enables the flexible opening and closing action of the opening and closing toothed block. The continuous preload of the limiting spring and the restoring force of the auxiliary spring work together to ensure a tighter meshing between the opening and closing toothed block and the limiting tooth groove, resulting in stronger stability in the locked state and improved smoothness of the unlocking action.

[0016] In a preferred embodiment of the present invention, when in the unlocked state, the limiting push rod pushes the opening and closing locking tooth block, at which time the opening and closing end of the opening and closing locking tooth block closes, causing the opening and closing locking tooth block to disengage from the limiting tooth groove, facilitating the extension and retraction of the movable rod. When in the locked state, the limiting push rod is released to cancel the pushing force. Under the action of the limiting spring and the auxiliary spring, the opening and closing end of the opening and closing locking tooth block resets and opens at a certain angle and automatically inserts into the corresponding limiting tooth groove, thereby locking the movable rod.

[0017] This setting enables automated control actions of "press-push-unlock" and "release-reset-lock". The operation can be completed by pressing and releasing the button with one hand, simplifying the process and responding quickly. With the reset action of the spring, there is no need to manually adjust the position of the locking teeth, which effectively improves the convenience and efficiency of adjustment during the operation.

[0018] In a preferred embodiment of the present invention, one end of the limiter push rod is fixedly connected to the limiter control button, and the other end of the limiter push rod corresponds to the opening and closing end of the opening and closing locking block.

[0019] With this setting, when the limiter control button is pressed, the limiter push rod drives the opening and closing locking block to disengage from the limiting tooth groove, thus releasing the lock. The movable rod can extend and retract freely. When the limiter control button is released, the opening and closing locking block is pushed back to its original position and engages with the limiting tooth groove under the action of the limiting spring and pressure airbag, thus locking the device.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: Surgical efficiency is significantly improved: the quick-release clip enables one-click installation and removal of vascular clips, greatly shortening operation time and reducing the risk of vascular ischemia, which is especially suitable for arterial anastomosis surgery with urgent time requirements; Significantly improved anastomosis accuracy: The precise tooth spacing design of the position limiter ensures that the gap error between the vascular clips is ≤0.1mm, avoiding large and uneven tension at the anastomosis site, and reducing the incidence of complications such as stenosis and bleeding; Enhanced operational safety: The damping effect of the pressure balloon controls the adjustment rate, preventing damage to the vascular endothelium caused by excessive instantaneous displacement and improving surgical safety. Highly flexible in use: It can be adapted to different sizes of arterial clamps, and the entire process can be completed with one hand without the need for multiple people to cooperate, making it suitable for complex operating room environments. Simple and reliable structure: The integrated design of each component results in a low failure rate and controllable manufacturing costs, facilitating large-scale production and clinical application. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present invention; Figure 2 This is a cross-sectional structural schematic diagram provided in an embodiment of the present invention; Figure 3 This is provided by the embodiments of the present invention. Figure 2 Enlarged schematic diagram of the middle section; Figure 4 This is a schematic diagram of the unlocked state structure of the limiter body provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the locking state structure of the limiter body provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the connecting main rod structure provided in an embodiment of the present invention.

[0022] In the diagram: 1. Linkage body; 2. Movable rod; 3. Limiter control button; 4. Vascular clamp; 5. Clamping and unlocking button; 6. Elastic clamp; 7. Pressure airbag; 8. Opening and closing locking teeth block; 9. Limiting spring; 10. Limiting tooth groove; 11. Limiter push rod; 12. Auxiliary spring; 13. Telescopic adjustment column. Detailed Implementation

[0023] To further understand the invention's content, features, and effects, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0024] The structure of the present invention will now be described in detail with reference to the accompanying drawings.

[0025] refer to Figures 1 to 6 As shown in the figure, an embodiment of the present invention provides an auxiliary device for adjusting arterial anastomosis, including a vascular clamp 4, a connecting rod body 1, a movable rod 2, a quick-clamping buckle, a limiter control button 3, a position limiter, and a pressure airbag 7. The quick-clamping buckle is configured as two for clamping and fixing the handle of the vascular clamp 4, and is respectively fixed to the right end of the connecting rod body 1 and the left end of the movable rod 2. The quick-clamping buckle includes an internal elastic clamping plate 6 and an external clamping and unlocking button 5. The movable rod 2 is nested inside the connecting rod body 1 to form a telescopic structure. The position limiter includes a limiting tooth groove 10 opened on the inner wall of the connecting rod body 1 and an opening and closing locking tooth block 8 on the outer wall of the movable rod 2. When locked, the limiting tooth groove 10 and the opening and closing locking tooth block 8 are precisely engaged. The opening and closing locking tooth block 8 is fixedly connected to a limiting spring 9 built into the position limiter. The limiter control button 3 and the opening and closing locking tooth block 8 are mechanically connected through a limiter push rod 11 to form a "press to unlock - release to lock" control mechanism.

[0026] Specifically, the elastic clip 6 adopts an arc-shaped fitting design to adapt to the handles of arterial vascular clips 4 of different specifications. The quick-clamping buckle also includes a clamping port at its bottom to facilitate the insertion of the handles of the vascular clips 4. Using the above method, when clamping, press the clamping unlock button 5, the elastic clamp 6 opens, and after inserting the vascular clamp 4, release the clamping unlock button 5. The elastic clamp 6 will spring back and automatically clamp the vascular clamp 4. When disassembling, press the clamping unlock button 5 to unlock. No additional operation is required, which is quick and convenient.

[0027] Specifically, the top of the connecting rod body 1 corresponding to the blood vessel clamp 4 is threaded with a telescopic adjustment column 13.

[0028] By using the above scheme, the telescopic adjustment column 13 can be turned up and down to limit the telescopic position of the handle of the arterial clip 4. That is, the handle of the arterial clip 4 can move telescopically along the inside of the quick-clamping buckle, so that the arterial clip 4 can be telescopically extended at the clamping port to correct the end misalignment, which further improves the accuracy and flexibility of adjustment, and greatly improves the positioning accuracy and usage efficiency of the arterial clip 4.

[0029] Specifically, both the movable rod 2 and the connecting rod body 1 are hollow tube structures made of medical-grade stainless steel, and the outer wall of the connecting rod body 1 is marked with scale markings.

[0030] Using the above solution, medical-grade stainless steel material has good biocompatibility and corrosion resistance, which meets the hygiene requirements of medical scenarios. The hollow tube structure can maintain structural strength, reduce weight, facilitate the telescopic movement and adjustment of the movable rod 2, and is also easy to operate by hand. The scale markings can help doctors intuitively read the distance of the vascular clamp 4, improving the accuracy of adjustment.

[0031] Specifically, the pressure airbag 7 is fitted at the nested connection between the connecting rod body 1 and the movable rod 2. The pressure airbag 7 is made of medical-grade polyurethane filled with silicone foam damping material. The pressure airbag 7 fits tightly with the movable rod 2. When the movable rod 2 extends or retracts, the contraction rate is controlled by the damping force to avoid excessive instantaneous adjustment that could damage blood vessels.

[0032] Using the above approach, balloons with different elastic coefficients can be replaced according to surgical needs, adapting to the different rate requirements of vascular anastomosis in small and large animals. From a mechanical structure perspective, this avoids operational errors caused by doctors manually controlling the rate, greatly reducing the risk of damage to the vascular endothelium. Furthermore, the damping force is gentle, providing a comfortable operating experience and improving the safety and controllability of the surgery.

[0033] Specifically, the opening and closing locking tooth block 8 is composed of two separate tooth blocks, one end of which is rotatably connected to the other. The rotating end of the opening and closing locking tooth block 8 is connected and fixed to the limiting spring 9. The inner sides of the opening and closing ends of the opening and closing locking tooth block 8 are connected and fixed to each other by an auxiliary spring 12. The limiting spring 9 is used to provide a continuous preload to ensure that the opening and closing locking tooth block 8 fits tightly with the limiting tooth groove 10, so that there is no loosening after the movable rod 2 is locked.

[0034] Using the above scheme, the rotating connection structure of the split tooth block, together with the auxiliary spring 12, can realize the flexible opening and closing action of the opening and closing tooth block 8. The continuous preload of the limiting spring 9 and the reset force of the auxiliary spring 12 work together to ensure that the opening and closing tooth block 8 and the limiting tooth groove 10 mesh more tightly, the stability in the locked state is stronger, and the smoothness of the unlocking action is improved.

[0035] Specifically, in the unlocked state, the limiter push rod 11 pushes the opening and closing locking tooth block 8, at which time the opening and closing end of the opening and closing locking tooth block 8 closes, causing the opening and closing locking tooth block 8 to disengage from the limiting tooth groove 10, facilitating the extension and retraction of the movable rod 2. In the locked state, the limiter push rod 11 is released to remove the pushing force. Under the action of the limiting spring 9 and the auxiliary spring 12, the opening and closing end of the opening and closing locking tooth block 8 is reset and opened at a certain angle and automatically inserted into the corresponding limiting tooth groove 10, thereby locking the movable rod 2.

[0036] The above solution forms an automated control action of "press-push-unlock" and "release-reset-lock". The operation can be completed by pressing and releasing the button with one hand. The process is simplified and the response is rapid. With the reset action of the spring, there is no need to manually adjust the position of the locking teeth, which effectively improves the convenience and efficiency of adjustment during the operation.

[0037] Specifically, one end of the limiter push rod 11 is fixedly connected to the limiter control button 3, and the other end of the limiter push rod 11 corresponds to the opening and closing end of the opening and closing locking block 8.

[0038] Using the above scheme, when the limiter control button 3 is pressed, the limiter push rod 11 drives the opening and closing locking block 8 to disengage from the limiting tooth groove 10, thereby releasing the lock. The movable rod 2 can extend and retract freely. When the limiter control button 3 is released, the opening and closing locking block 8 is pushed back to its original position and engages with the limiting tooth groove 10 under the action of the limiting spring 9 and the pressure airbag 7, thereby achieving the lock.

[0039] Working principle of the invention: In use, press the clamp unlock button 5 on the quick clamping buckle, the elastic clamp 6 opens, select the surgically appropriate arterial clamp 4, place the handle of the arterial clamp 4 into the clamping port, release the clamp unlock button 5, the elastic clamp 6 automatically clamps the clamp 4, and the clamping is completed. In the initial state, the device is in the maximum open position. The doctor places the device with the clamps 4 clamped at both ends in the surgical area, aligning the clamps 4 with both ends of the artery to be anastomosed, press the limiter control button 3 to release the position lock, and slowly compress the movable rod 2 inward to move the clamps at both ends of the artery. When the clamps 4 are brought closer together, the pressure balloon 7 provides damping force to prevent excessive adjustment. When the spacing of the vascular clamps 4 reaches the target position required for anastomosis (determined according to the blood vessel diameter and surgical needs), the limiter control button 3 is released. The limiter spring 9 of the position limiter pushes the opening and closing locking tooth block 8 and the limiter groove 10 to engage and lock the current position. During this period, the device keeps the vascular clamps 4 stable and fixed to prevent displacement. The doctor performs the arterial anastomosis surgery. After the anastomosis is completed, the quick-release clamp release button 5 is pressed to remove the arterial vascular clamps 4 and complete the surgery.

[0040] The quick-clamping buckle has a clamping opening diameter of 2-8mm (compatible with mainstream arterial clamp handles on the market), a telescopic stroke of the connecting rod body and the movable rod of 3-45mm (to meet the anastomosis requirements of arterial vessels of different lengths), a limiter tooth pitch of 0.1mm (to ensure the accuracy of the spacing adjustment), a pressure balloon positive pressure of 0.08-0.15MPa (the balloon can be replaced with a different elastic coefficient according to the surgical requirements), an overall device weight of ≤100g, and a length of 10-50mm (for easy hand operation).

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for adjusting arterial anastomosis, characterized in that: The device includes a vascular clamp (4), a connecting rod body (1), a movable rod (2), a quick-clamping buckle, a limiter control button (3), a position limiter, and a pressure airbag (7). The quick-clamping buckle is configured as two buckles for clamping and fixing the handle of the vascular clamp (4), and is fixed to the right end of the connecting rod body (1) and the left end of the movable rod (2) respectively. The quick-clamping buckle includes an internal elastic clamping plate (6) and an external clamping and unlocking button (5). The movable rod (2) is nested inside the connecting rod body (1) to form a telescopic mechanism. The position limiter includes a limiting tooth groove (10) on the inner wall of the connecting rod body (1) and an opening and closing locking tooth block (8) on the outer wall of the movable rod (2). When locked, the limiting tooth groove (10) and the opening and closing locking tooth block (8) are precisely engaged. The opening and closing locking tooth block (8) is fixedly connected to the limiting spring (9) built into the position limiter. The limiter control button (3) and the opening and closing locking tooth block (8) are mechanically connected through the limiter push rod (11) to form a control mechanism of "press to unlock - release to lock".

2. The arterial anastomosis adjustment auxiliary device as described in claim 1, characterized in that: The elastic clip (6) adopts an arc-shaped fitting design to fit different sizes of arterial clamp (4) handles. The quick-clamping buckle also includes a clamping port at its bottom for easy insertion of the clamp (4) handle.

3. The arterial anastomosis adjustment auxiliary device as described in claim 1, characterized in that: Both the movable rod (2) and the connecting rod body (1) are hollow tube structures made of medical-grade stainless steel, and the outer wall of the connecting rod body (1) is marked with scale markings.

4. The arterial anastomosis adjustment auxiliary device as described in claim 1, characterized in that: The pressure airbag (7) is fitted at the nested connection between the connecting rod body (1) and the movable rod (2). The pressure airbag (7) is made of medical-grade polyurethane filled with silicone foam damping material. The pressure airbag (7) fits tightly with the movable rod (2). When the movable rod (2) extends or retracts, the contraction rate is controlled by the damping force to avoid excessive instantaneous adjustment that could damage blood vessels.

5. The arterial anastomosis adjustment auxiliary device as described in claim 1, characterized in that: The opening and closing locking tooth block (8) is composed of two separate tooth blocks, one end of which is rotatably connected to the other. The rotating end of the opening and closing locking tooth block (8) is connected and fixed to the limiting spring (9). The inner sides of the opening and closing ends of the opening and closing tooth blocks (8) are connected and fixed to each other by an auxiliary spring (12). The limiting spring (9) is used to provide a continuous preload to ensure that the opening and closing tooth block (8) fits tightly with the limiting tooth groove (10), so that the movable rod (2) does not loosen after being locked.

6. The arterial anastomosis adjustment auxiliary device as described in claim 5, characterized in that: When in the unlocked state, the limiter push rod (11) pushes the opening and closing tooth block (8), at which time the opening and closing end of the opening and closing tooth block (8) closes, causing the opening and closing tooth block (8) to disengage from the limiting tooth groove (10), facilitating the extension and retraction of the movable rod (2). When in the locked state, the limiter push rod (11) is released to cancel the push force. Under the action of the limiting spring (9) and the auxiliary spring (12), the opening and closing end of the opening and closing tooth block (8) is reset and opened at a certain angle and automatically inserted into the corresponding limiting tooth groove (10), thereby locking the movable rod (2).

7. The arterial anastomosis adjustment auxiliary device as described in claim 1, characterized in that: One end of the limiter push rod (11) is fixedly connected to the limiter control button (3), and the other end of the limiter push rod (11) corresponds to the opening and closing end of the opening and closing tooth block (8).

8. The arterial anastomosis adjustment auxiliary device as described in claim 1, characterized in that: The top of the connecting rod body (1) corresponding to the vascular clamp (4) is threaded with a telescopic adjustment column (13).

Images