CN-122004985-A - Aortic dissection blocking forceps capable of being adjusted in multiple degrees of freedom

CN122004985ACN 122004985 ACN122004985 ACN 122004985ACN-122004985-A

Abstract

The invention belongs to the technical field of medical equipment, but is not limited to the technical field, in particular to an aortic dissection blocking forceps capable of being adjusted by multiple degrees of freedom, which comprises a multi-joint linkage adjustment module, a main body and a main body, wherein the multi-joint linkage adjustment module is composed of forceps arms consisting of at least 3 lockable rotary joints, so that the multi-dimensional posture adjustment of a forceps body is realized, and the forceps body is adapted to different vascular orientations; the self-adaptive rotation module of the forceps head is connected to the joint at the farthest end to realize 360-degree continuous rotation of the forceps head and ensure that the clamping surface of the forceps head is perpendicular to the longitudinal axis of the blood vessel, the accurate control and positioning module is integrated with an angle fine adjustment knob and an ergonomic handle to realize real-time and accurate posture fine adjustment and stable holding in operation, and the safe locking and quick release module is connected with a joint locking mechanism and a handle quick release button to realize joint locking, unlocking and quick loosening of forceps in emergency.

Inventors

ZHANG FENGQUAN
LI HAIJIE
CAI WENJING
WANG HONGJUAN
HU WEILIANG

Assignees

青岛钰仁医疗科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260401

Claims (10)

1. The aortic dissection blocking forceps capable of being adjusted in multiple degrees of freedom are characterized by comprising a forceps arm assembly, a forceps head assembly, a handle assembly and a locking and releasing assembly; The clamp arm assembly is composed of at least 3 joint sections which are connected in sequence, lockable rotary joints are arranged between adjacent joint sections, and each lockable rotary joint has a rotary state and a locking state; the clamp head assembly is arranged at the far end of the clamp arm assembly and is rotationally connected with the lockable rotary joint at the far end, so that the clamp head assembly performs circumferential rotary adjustment relative to the clamp arm assembly; The handle assembly is arranged at the proximal end of the clamp arm assembly, is in transmission connection with the adjusting mechanism of the lockable rotary joint and is used for driving the clamp arm assembly to adjust the posture; The locking and releasing assembly is respectively connected with the lockable rotary joints and the clamping mechanisms of the clamp head assemblies and is used for realizing joint locking, joint unlocking and jaw quick release; the rotary axes of the clamp head assemblies are intersected with the tail end axes of the clamp arms, so that the jaw clamping surfaces can be adjusted to a working posture perpendicular to the longitudinal axis of the target blood vessel.
2. The multiple degree of freedom adjustable aortic dissection occlusion clamp of claim 1, wherein, The lockable rotary joint is of a ratchet pawl type locking structure and comprises a rotary shaft, a ratchet piece, an elastic locking piece and an unlocking piece; when the unlocking piece is acted by external force, the elastic locking piece is driven to be separated from the ratchet piece, and the locking is released; After the external force is removed, the elastic locking piece is meshed with the ratchet piece again, and locking is restored.
3. The multiple degree of freedom adjustable aortic dissection occlusion clamp of claim 1, wherein, The clamp arm assembly is provided with two length specifications, namely 250 to 300 mm and 180 to 220 mm; each joint segment has a length of 8 to 12 mm; the rotation range of each lockable rotation joint is 0 to 180 °; the axial displacement and the radial displacement of each lockable rotary joint in the locked state are not more than 0.1 mm.
4. An adaptive rotary clamp head assembly for aortic dissection blocking forceps is characterized by comprising a connecting seat, a rotary joint, a clamp head body and a jaw clamping part; the rotary joint is arranged between the connecting seat and the clamp head body, and the clamp head body continuously and circumferentially rotates relative to the connecting seat through the rotary joint; The clamp head body is of an arc-shaped structure, the jaw clamping part is arranged at the front end of the clamp head body, and the jaw clamping part is provided with clamping surfaces which are oppositely arranged; The clamping surface is of a planar structure, the surface of the clamping surface is provided with anti-skid textures, and the inner side of the clamping surface is provided with an elastic buffer layer; The extending direction of the arc-shaped structure is matched with the clamping direction of the clamping surface, so that the jaw clamping part forms a surface contact clamping state when being attached to the outer wall of the aorta.
5. The adaptive rotating clamp head assembly of claim 4, wherein, The rotary joint adopts a rolling bearing structure, a sealing structure is arranged between the connecting seat and the clamp head body, and the rotation resistance of the clamp head body relative to the connecting seat is not more than 5N; the clamp head body can rotate 360 degrees continuously.
6. The adaptive rotating clamp head assembly of claim 4, wherein, The length of the clamp head body is 15 to 20 mm; the width of the clamp head body is 3 to 5 mm; The clamping surface is provided with three specifications, namely 10 mm times 5mm, 12 mm times 6 mm and 15 mm times 8 mm; the depth of the anti-skid texture is 0.1 to 0.2 mm; the elastic buffer layer is a medical silica gel layer, and the hardness of the elastic buffer layer is 30 to 40A Shore.
7. The accurate control and safe release assembly for the aortic dissection blocking forceps is characterized by comprising a handle body, a fine adjustment mechanism, a total locking mechanism and a quick release mechanism; The handle body is used for being held by an operator; The fine adjustment mechanism is arranged on the handle body, is in transmission connection with the multi-joint linkage mechanism of the blocking forceps and is used for driving the tail end gesture of the blocking forceps to adjust at a small angle; the total locking mechanism is arranged on the handle body, is connected with the plurality of joint locking units and is used for controlling the plurality of joint locking units to synchronously enter a locking state or an unlocking state; The quick release mechanism is arranged on the handle body, is connected with the jaw clamping mechanism and is used for releasing the jaw clamping state after triggering.
8. The precision handling and safety release assembly of claim 7, The fine adjustment mechanism is a knob driving type transmission structure, the posture change angle of the tail end of the blocking clamp corresponding to one rotation of the knob is not more than 5 degrees, and the fine adjustment precision is not more than 0.5 degrees; The surface of the knob is provided with an anti-slip structure and an angle scale.
9. The precision handling and safety release assembly of claim 7, The quick release mechanism is of a pressing trigger type structure, and the time from the start of triggering to the state of releasing the clamping of the jaw is not more than 0.5 s; The quick release mechanism is provided with a limiting anti-false touch structure, and the release action can be triggered only after the quick release mechanism is pressed to a preset stroke.
10. The precision handling and safety release assembly of claim 7, The handle body is of an ergonomic holding structure, and the holding part is provided with anti-slip lines; the length of the handle body is 100-120 mm, and the diameter is 25-30 mm; The handle body and the blocking forceps arms are of an integrated connection structure, and a reinforcing structure is arranged at the connection part.

Description

Aortic dissection blocking forceps capable of being adjusted in multiple degrees of freedom Technical Field The invention belongs to the technical field of medical instruments, but is not limited to, and particularly relates to an aortic dissection blocking clamp capable of being adjusted in multiple degrees of freedom. Background Aortic dissection is a critical clinical condition, and the aorta in a lesion area needs to be precisely blocked in operation so as to control bleeding and create a clear operation field. The traditional aortic occlusion forceps are of a single-degree-of-freedom or double-degree-of-freedom structure, and have the problems that joint adjustment is limited, forceps heads cannot be matched with the trend of complex blood vessels, local pressure of the blood vessels is overlarge due to line contact, positioning accuracy in operation is insufficient, quick release cannot be achieved in emergency, complications such as vascular intima injury, rupture and hemorrhage are easily caused, and operation risks are increased. In order to solve the pain point, based on the design of the multi-joint linkage structure, the aortic dissection blocking technical scheme capable of realizing multi-degree-of-freedom adjustment is specially made, the complex vascular anatomical structure in the aortic dissection is adapted, and the safety and the accuracy of blocking operation are improved. In view of the above analysis, the technical problem to be solved in the prior art is that the angle of the traditional aortic occlusion clamp is fixed, the position and the angle can not be flexibly adjusted in the operation, the operation field is easy to be blocked, the direct-viewing operation of the vascular anastomosis region by the operator is influenced, and the operation difficulty and the risk are increased. Disclosure of Invention Aiming at the problems existing in the prior art, the invention provides an aortic dissection blocking clamp capable of being adjusted in multiple degrees of freedom, which is suitable for aortic dissection operations in various aortic dissection (Stanford A type and B type) operations, is especially suitable for dissection cases with complicated vascular trend and special anatomical positions (such as aortic arch part and descending aortic proximal end), and can be widely applied to heart chest surgery, vascular surgery minimally invasive surgery and open surgery. The invention is realized in that an aortic dissection blocking forceps capable of being adjusted by multiple degrees of freedom comprises: The core of the multi-joint linkage adjustment module is a clamp arm formed by at least 3 lockable rotary joints, so that the multi-dimensional posture adjustment of the clamp body is realized, and the clamp body is adapted to different vascular trends; the clamp head self-adaptive rotating module is connected with the joint at the most distal end, so that 360-degree continuous rotation of the clamp head is realized, and the clamping surface of the clamp head is ensured to be perpendicular to the longitudinal axis of the blood vessel; the accurate control and positioning module integrates an angle fine adjustment knob and an ergonomic handle, so as to realize real-time and accurate posture fine adjustment and stable holding in operation; And the safe locking and quick releasing module is used for linking the joint locking mechanism and the handle quick releasing button to realize joint locking, unlocking and quick release of the pliers under emergency. Further, the multi-joint linkage adjustment module specifically includes: The joint structure is designed in such a way that the forceps arms adopt a segmented structure, 3 or more lockable rotary joints are arranged in total, the length of a single joint is 8-12mm, and the length of the whole forceps arm is designed into two specifications, namely 250-300mm of minimally invasive type and 180-220mm of open type. Each joint adopts a design of a rotating shaft and a ratchet wheel pawl locking mechanism, the rotating shaft is made of medical grade titanium alloy, the surface of the rotating shaft is polished, the rotating friction force is reduced, the pawl is made of elastic medical stainless steel, no looseness is ensured after locking, the locking can be released by pressing an unlocking button during unlocking, and flexible rotation is realized. The rotation range and the locking precision of the joint are that the rotation angle range of each lockable rotation joint is 0-180 degrees, the rotation stepping precision is less than or equal to 1 degree, the locking mechanism adopts a bidirectional locking design, the locking can be realized at any rotation angle, and the axial and radial displacement of the joint after the locking is less than or equal to 0.1mm. The forceps arm is made of medical grade titanium alloy, has light weight, high strength, minimally invasive integral weight of less than or equal to 150g and open integral weig