CN117860344A - Medical instrument fast-assembling handle - Google Patents

Abstract

The invention relates to the technical field of medical instruments, in particular to a quick-mounting handle of a medical instrument. The automatic locking device comprises a handle and a trigger hinged to the handle, wherein a quick-assembly interface is arranged at the upper end of the handle and comprises a connecting rod cavity fixedly connected to the upper end of the handle and a connecting sleeve arranged at the front end of the connecting rod cavity, an eccentric locking ring is arranged in an inner cavity of the connecting sleeve, a connecting rod is slidably installed in the connecting rod cavity, the triggering end of the trigger penetrates through the connecting rod cavity to be connected to the rear end of the connecting rod, and a self-locking interface used for connecting a driving rod of a medical instrument is arranged at the front end of the connecting rod. The handle can be matched with a plurality of medical instrument forceps heads to realize different functions, and can realize quick assembly and disassembly, and the operation is simple and convenient, and the action is light and has high accuracy.

Description

Medical instrument fast-assembling handle

Technical Field

The invention relates to the technical field of medical instruments, in particular to a quick-mounting handle of a medical instrument.

Background

The manual surgical instruments such as a scraper, a shovel blade, a rongeur and the like usually adopt a grab handle to realize the functions of the surgical instrument device. In general, a set of handles is required to correspond to various surgical instruments and devices, and a rapid switching function is realized in a surgery. The switching speed and convenience are important in the operation process, and influence the operation process and even the result. The operation of assembling the operation instrument device on the hand-held equipment of the handle is complex in the operation, and the operation is inconvenient. If the surgical instrument device needs to be assembled into the handle structure, the surgical instrument device is screwed into the handle structure for compaction and assembly, so that the quick maneuverability is lost on timeliness, the operation process is tedious for a surgical operator, and the surgical instrument device is inconvenient to use, and particularly for some emergency operations, the success or failure of the operation can be influenced. For example, chinese patent application 202311721606X discloses a laparoscopic surgical instrument based on pull sleeve drive, comprising a clamp head and a conduction mechanism; the conduction mechanism comprises an instrument rod with a hollow structure, a continuum fixed at one end of the instrument rod, an opening and closing driving rope and two steel wire ropes; the deflection control mechanism core comprises a core slide rail, two deflection pull blocks, two deflection pull sleeves, a cam, a deflection bush and a deflection thumb wheel; the cam is driven to rotate by rotating the deflection shifting wheel, and a lead notch on the cam is matched with the deflection pulling sleeve to drive the clamp head to deflect; the trigger is directly connected with the other end of the opening and closing driving rope. The laparoscopic surgical instrument drives the rope to drive the forceps head to act through the traction of the trigger, and the forceps head and the conduction mechanism are in a non-detachable connection mode, so that the surgical instrument is inconvenient for quickly replacing forceps heads of different types.

Disclosure of Invention

The invention aims to provide a medical instrument quick-mounting handle which is simple and convenient to operate and is used for quickly disassembling and assembling medical surgical instruments.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the invention discloses a medical instrument fast-assembling handle, which comprises a handle and a trigger hinged on the handle, wherein the upper end of the handle is provided with a fast-assembling interface, the fast-assembling interface comprises a connecting rod cavity fixedly connected to the upper end of the handle and a connecting sleeve arranged at the front end of the connecting rod cavity, an eccentric lock ring is arranged in the inner cavity of the connecting sleeve, a connecting rod is slidably arranged in the connecting rod cavity, the triggering end of the trigger passes through the connecting rod cavity and is connected to the rear end of the connecting rod, and the front end of the connecting rod is provided with a self-locking interface for connecting a medical instrument driving rod.

According to the scheme, the connecting sleeve is used for connecting an outer sleeve of a forceps head of a medical instrument and locking the outer sleeve through the eccentric locking ring; the self-locking interface is used for connecting a driving rod in the outer sleeve of the medical instrument clamp head, and the trigger end of the trigger pushes the driving rod to reciprocate, so that the action of the medical instrument clamp head is realized.

Preferably, the self-locking interface comprises a connecting pipe fixedly arranged at the front end of the connecting rod, a pressing ring slidably arranged in an inner cavity of the connecting sleeve, and a ball embedded on the outer wall of the connecting pipe, wherein a spring seat is arranged on the pressing ring, a core pipe extending into the inner cavity of the connecting sleeve is arranged at the front end of the connecting rod cavity, the inner diameter of the front end of the core pipe is larger than that of the rear end of the core pipe, the inner diameter of the rear end of the core pipe is matched with the outer diameter of the connecting pipe, the connecting pipe can be inserted into the core pipe, the inner diameter of the front end of the core pipe is matched with the outer diameter of the pressing ring, the pressing ring can be inserted into the front end of the core pipe, and a pressing ring spring is arranged between the spring seat and the core pipe.

Through this scheme, realize the quick assembly disassembly of medical instrument binding clip, easy operation is convenient.

Preferably, the trigger end of the trigger is provided with a ball head, the connecting rod is provided with a ball socket, and the ball head is arranged in the ball socket.

Through this scheme, realize trigger and the reliable connection of connecting rod and action nimble light, the reliability is high.

Preferably, the connecting pipe is sleeved with a connecting rod spring, and the connecting rod spring is arranged between the core pipe and the connecting pipe.

Through this scheme, connecting pipe and trigger can realize automatic re-setting.

Preferably, an annular groove for accommodating the eccentric locking ring is formed in the inner wall of the connecting sleeve, a key protruding out of the outer wall of the connecting sleeve is arranged on one side of the eccentric locking ring, and a locking ring spring is arranged in the annular groove on the other side of the eccentric locking ring opposite to the key and used for pushing the eccentric locking ring to move towards one side of the key.

Through this scheme, eccentric catch can radially remove in the ring channel, utilizes the step that forms between ring channel and the eccentric catch to lock the outer tube of medical instrument binding clip.

Preferably, a buffer plug is slidably mounted in the inner cavity of the connecting pipe, and a buffer spring is arranged between the buffer plug and the connecting rod.

Through this scheme, can cushion and compress tightly the actuating lever of the medical instrument binding clip of inserting connecting pipe inner chamber, avoid the actuating lever not hard up to cause the action inaccurate.

Compared with the prior art, the invention has the beneficial effects that: the handle can be matched with a plurality of medical instrument forceps heads to realize different functions, and can realize quick assembly and disassembly, and the operation is simple and convenient, and the action is light and has high accuracy.

Drawings

FIG. 1 is a schematic diagram of an initial state according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the connecting rod cavity and connecting sleeve;

FIG. 3 is an exploded view of the quick connect interface and the self locking interface;

FIG. 4 is a schematic view of the structure of a medical instrument head when installed;

FIG. 5 is a schematic view of the structure of the trigger pulled in use.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1, the quick-mounting handle of the medical instrument comprises a handle 1 and a trigger 2 hinged on the handle 1, wherein the upper end of the handle 1 is provided with a quick-mounting interface for mounting a forceps head of the medical instrument. As shown in fig. 4, the medical instrument forceps head used in a matched manner comprises an outer sleeve 8 and a driving rod 9 arranged in the outer sleeve 8, an annular clamping groove 81 is formed in the outer wall of the outer sleeve 8, the tail end of the driving rod 9 is a sphere, and a driving rod neck with a slightly smaller diameter is arranged between the sphere and the driving rod 9 body. When the clamp is used, the outer sleeve 8 can be fixed by being clamped in the clamping groove 81 by an external device, and then the driving rod 9 can be dragged to axially move relative to the outer sleeve 8 by being clamped in the neck of the driving rod by the driving mechanism, so that the executing structure action of the other end of the clamp head is driven, and the functional actions such as occlusion, clamping, shearing and the like are completed.

As shown in fig. 1 and 2, the quick-assembly interface comprises a connecting rod cavity 3 fixedly connected to the upper end of the handle 1, and a connecting sleeve 4 arranged at the front end of the connecting rod cavity 3, wherein the connecting sleeve 4 and the connecting rod cavity 3 are coaxially arranged and are of hollow tubular structures, the connecting sleeve 4 and the connecting rod cavity 3 can be connected by a buckle as shown in the drawing, can also be connected by threads or are welded into a whole by ultrasonic waves, the rear end of the connecting rod cavity 3 is connected with an end cap 91 through threads, and the end cap 91 seals the rear end of the connecting rod cavity 3, so that the internal structure is convenient to detach, clean and maintain. An eccentric locking ring 41 is arranged in the inner cavity of the connecting sleeve 4, and the eccentric locking ring 41 is matched with the outer sleeve 8 of the forceps head of the medical instrument and is used for locking the outer sleeve 8 when in use. The eccentric lock ring 41 is of an annular structure with certain hardness, the pressing part is easy to deform, an annular groove for accommodating the eccentric lock ring 41 is formed in the inner wall of the connecting sleeve 4, a key 43 protruding out of the outer wall of the connecting sleeve 4 is arranged on one side of the eccentric lock ring 41, the key 43 can be of an integrated structure with the eccentric lock ring 41 or of a split structure, and the eccentric lock ring 41 can be radially moved in the annular groove for a certain distance by pressing the key 43 so as to be positioned at an eccentric position; in addition, a locking ring spring 42 is installed in an annular groove at the other side of the eccentric locking ring 41 with respect to the push button 43, and the locking ring spring 42 is used to push the eccentric locking ring 41 to move toward the push button 43 side.

The connecting rod 31 is slidably installed in the connecting rod cavity 3, the triggering end of the trigger 2 penetrates through the connecting rod cavity 3 and is connected to the rear end of the connecting rod 31, a plurality of strip-shaped through holes 39 are formed in the outer wall of the connecting rod cavity 3, one through hole 39 is used for installing the trigger 2 and allowing the trigger 2 to move along the axis direction of the connecting rod cavity 3, and other through holes 39 can facilitate cleaning of internal structures. The front end of the connecting rod 31 is provided with a self-locking interface for connecting a driving rod of a medical instrument. The trigger 2 is provided with a ball at its trigger end, and the connecting rod 31 is provided with a ball socket, in which the ball is mounted. When in use, the handle 1 is held, the trigger 2 is pulled, and the ball head at the upper end of the trigger 2 pushes the connecting rod 31 to slide forwards.

As shown in fig. 2 and 3, the self-locking interface comprises a connecting pipe 32 fixedly arranged at the front end of the connecting rod 31, a pressing ring 33 slidably mounted in the inner cavity of the connecting sleeve 4, and balls 34 embedded on the outer wall of the connecting pipe 32, the pressing ring 33 is of an annular structure, one end of the pressing ring 33 is provided with a spring seat 35, the other end of the pressing ring is provided with a bell mouth, 3-8 ball mounting holes are uniformly distributed on the outer wall of the connecting pipe 32, the ball mounting holes penetrate through the side wall of the connecting pipe 32, the inner end aperture of each ball mounting hole is slightly smaller than the diameter of each ball 34, and the balls 34 can partially extend into the inner cavity of the connecting pipe 32 and cannot fall into the inner cavity. The wall thickness of the connecting tube 32 is smaller than the diameter of the balls 34, so that when the outer ends of the balls 34 are flush with the outer wall of the connecting tube 32, the inner ends of the balls necessarily extend into the inner cavity of the connecting tube 32; when the inner ends of the balls 34 are flush with the inner wall of the connection tube 32, the outer ends thereof necessarily protrude from the outer wall of the connection tube 32.

The front end of the connecting rod cavity 3 is provided with a core tube 36 extending into the inner cavity of the connecting sleeve 4, the inner diameter of the front end of the core tube 36 is larger than that of the rear end, the inner diameter of the rear end of the core tube 36 is in a two-section ladder shape, the outer diameter of the connecting tube 32 is matched with that of the connecting tube 32, so that the connecting tube 32 can be inserted into the core tube 36, when the connecting tube 32 is inserted into the rear end of the core tube 36, as shown in fig. 2, the inner wall of the core tube 36 forms a squeezing action on the balls 34 on the connecting tube 32, the balls 34 are squeezed to the bottom of the ball mounting holes, and the balls 34 are partially extended into the inner cavity of the connecting tube 32; a plurality of balls 34 extending annularly into the interior of the connecting tube 32 cooperate to form an annular clamping mechanism.

The inner diameter of the front end of the core tube 36 is adapted to the outer diameter of the pressing ring 33, so that the pressing ring 33 can be inserted into the front end of the core tube 36, and a pressing ring spring 37 is arranged between the spring seat 35 and the core tube 36. When no external force acts, the pressing ring spring 37 pushes the pressing ring 33 away from the core tube 36; when an external force acts on the pressing ring 33, the pressing ring 33 can extend into the front end of the core tube 36 against the elastic force of the pressing ring spring 37.

In addition, as a further improvement of the invention, the connecting pipe 32 is sleeved with a connecting rod spring 38, and the connecting rod spring 38 is arranged between the core pipe 36 and the connecting pipe 32. When the trigger 2 is pulled, the connecting rod 31 and the connecting tube 32 move forwards against the elastic force of the connecting rod spring 38, and when the trigger 2 is released, the connecting rod spring 38 pushes the connecting rod 31 and the connecting tube 32 to move backwards for resetting.

Of course, as another embodiment of the present invention, as shown in fig. 1, a return spring 9 may be disposed between the trigger 2 and the handle 1, and the return spring 9 is used to push the trigger 2 to reset, and when the trigger 2 resets, the ball head on the trigger 2 drives the push connecting rod 31 and the connecting tube 32 to reset.

In addition, as a further improvement of the present invention, a buffer plug 5 is slidably installed in the inner cavity of the connecting tube 32, and a buffer spring 51 is disposed between the buffer plug 5 and the connecting rod 31.

As shown in fig. 4, when the medical instrument clamp head is not mounted, the eccentric lock ring 41 in the connecting sleeve 4 is pushed to one side eccentric position by the lock ring spring 42, and the press ring spring 37 pushes the press ring 33 away from the core tube 36; when the medical appliance forceps head is required to be installed, the handle 1 is held, the trigger 2 is pulled, the trigger 2 moves towards the direction of the handle 1, the ball head at the upper end of the trigger 2 pushes the connecting rod 31 and the connecting pipe 32 to move forwards to the front dead center position shown in fig. 4, at the moment, the ball 34 on the connecting pipe 32 slides through the rear end of the smaller inner diameter of the core pipe 36 to be positioned in the inner cavity of the front end of the larger inner diameter, then the key 43 is pressed down to restore the eccentric locking ring 41 to the position concentric with the connecting sleeve 4, the medical appliance forceps head is inserted into the connecting sleeve 4 and is inserted into place, and after the key 43 is released, the eccentric locking ring 41 moves towards the eccentric position under the action of the locking ring spring 42 and is clamped into the clamping groove 81 on the outer sleeve 8, so that the outer sleeve 8 is fixed. Meanwhile, the end part of the outer sleeve 8 pushes the pressing ring 33 to push the pressing ring 33 into the core tube 36, the driving rod 9 at the center of the outer sleeve 8 is inserted into the connecting tube 32 positioned in the core tube 36, the ball 34 on the connecting tube 32 is jacked up by the ball at the tail end of the driving rod 9 to slide to the other side of the ball 34, and the ball at the tail end of the driving rod 9 enters the other side of the ball 34 and is blocked by the buffer plug 5 and the buffer spring 51, so that the functions of axial limiting and buffering are realized; after the trigger 2 is released, the trigger 2 is reset, the connecting rod 31 and the connecting pipe 32 move backward, the ball 34 on the connecting pipe 32 is pressed and clamped into the neck of the driving rod 9 by the rear end of the core pipe 36, the ball 34 pressed and sliding on the inner wall of the core pipe 36 when the connecting pipe 32 moves backward along with the connecting pipe 32 and drags the driving rod 9 to move backward, and the ball 34 rolls and rotates to provide contact sliding and reduce friction, so that the initial state of the connected medical instrument clamp head shown in fig. 1 is finally formed. In operation, as shown in FIG. 5, the actuation of the medical instrument head can be achieved by repeatedly pulling the trigger 2 and pushing the drive rod 9 forward through the connecting tube 32. When the medical instrument clamp head is disassembled, the outer sleeve 8 and the driving rod 9 can be pulled out together by only pressing the key 43 to restore the eccentric lock ring 41 to the position concentric with the connecting sleeve 4 and releasing the outer sleeve 8 under the condition that the trigger 2 is pulled and the connecting pipe 32 moves to the front dead point.

What is not described in detail in this specification is prior art known to those skilled in the art.

Although embodiments of the present 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 therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a medical instrument fast-assembling handle, includes handle (1) and articulates trigger (2) on (1) handle, the upper end of handle (1) is provided with the fast-assembling interface, a serial communication port, the fast-assembling interface includes connecting rod chamber (3) of fixed connection in handle (1) upper end, sets up adapter sleeve (4) at connecting rod chamber (3) front end, be provided with eccentric catch (41) in the inner chamber of adapter sleeve (4), slidable mounting connecting rod (31) in connecting rod chamber (3), the rear end at connecting rod (31) is connected through connecting rod chamber (3) to the triggering end of trigger (2), the front end of connecting rod (31) is provided with the auto-lock interface that is used for connecting medical instrument actuating lever.

2. The medical instrument quick-mounting handle according to claim 1, wherein the self-locking interface comprises a connecting pipe (32) fixedly arranged at the front end of the connecting rod (31), a pressing ring (33) slidably arranged in an inner cavity of the connecting sleeve (4) and a ball (34) embedded on the outer wall of the connecting pipe (32), a spring seat (35) is arranged on the pressing ring (33), a core pipe (36) extending into the inner cavity of the connecting sleeve (4) is arranged at the front end of the connecting rod cavity (3), the inner diameter of the front end of the core pipe (36) is larger than the rear end, the inner diameter of the rear end of the core pipe (36) is matched with the outer diameter of the connecting pipe (32), the connecting pipe (32) can be inserted into the core pipe (36), the inner diameter of the front end of the core pipe (36) is matched with the outer diameter of the pressing ring (33), and the pressing ring (33) can be inserted into the front end of the core pipe (36), and a pressing ring spring (37) is arranged between the spring seat (35) and the core pipe (36).

3. A quick handle for medical instruments according to claim 1 or 2, characterized in that the trigger end of the trigger (2) is provided with a ball head, the connecting rod (31) is provided with a ball socket, and the ball head is arranged in the ball socket.

4. The medical instrument quick-mounting handle according to claim 2, wherein the connecting tube (32) is sleeved with a connecting rod spring (38), and the connecting rod spring (38) is arranged between the core tube (36) and the connecting tube (32).

5. The medical instrument quick-mounting handle according to claim 1 or 2, wherein an annular groove for accommodating an eccentric locking ring (41) is formed in the inner wall of the connecting sleeve (4), a key (43) protruding out of the outer wall of the connecting sleeve (4) is arranged on one side of the eccentric locking ring (41), a locking ring spring (42) is arranged in the annular groove on the other side of the eccentric locking ring (41) opposite to the key (43), and the locking ring spring (42) is used for pushing the eccentric locking ring (41) to move towards one side of the key (43).

6. The medical instrument quick-mounting handle according to claim 2, wherein a buffer plug (5) is slidably mounted in the inner cavity of the connecting tube (32), and a buffer spring (51) is arranged between the buffer plug (5) and the connecting rod (31).