阅读说明：本技术 一种联合式镜下环锯 (Combined under-mirror ring saw ) 是由 顾霄鹏 于 2021-09-10 设计创作，主要内容包括：本发明公开了一种联合式镜下环锯,旨在解决现在的大小套筒在切换时需要多端配合的不足。该发明包括大套筒和小套筒,小套筒插装在大套筒中,大套筒的端部具有第一转动把手,小套筒的端部具有第二转动把手,大套筒一端具有弧形楔口,小套筒远离第二转动把手的一端具有锯齿,大套筒和小套筒之间具有定位组件,定位组件包括大套筒和小套筒之间的复位弹簧、卡位销、开关臂、若干环槽和弹性件。卡位销沿大套筒的径向方向滑动,卡位销卡入卡槽对小套筒定位,开关臂铰接第一转动把手,开关臂的一端铰接连接卡位销,开关臂的另一端具有开关把手。本申请可以实现单手切换,减少对镜下环锯套筒的扰动,减小对受术人的损伤,提高手术的精度。(The invention discloses a combined type under-mirror trepan, aiming at solving the defect that multiple ends are required to be matched when the existing large sleeve and the existing small sleeve are switched. The small sleeve is inserted into the large sleeve, a first rotating handle is arranged at the end part of the large sleeve, a second rotating handle is arranged at the end part of the small sleeve, an arc-shaped wedge opening is formed in one end of the large sleeve, sawteeth are formed in one end, far away from the second rotating handle, of the small sleeve, a positioning assembly is arranged between the large sleeve and the small sleeve, and the positioning assembly comprises a return spring, a clamping pin, a switch arm, a plurality of annular grooves and an elastic piece, wherein the return spring, the clamping pin, the switch arm, the annular grooves and the elastic piece are arranged between the large sleeve and the small sleeve. The screens round pin slides along big telescopic radial direction, and the screens round pin card is gone into the draw-in groove and is fixed a position little sleeve, and the first handle of rotating is articulated to the switch arm, and the one end of switch arm articulates the connection screens round pin, and the other end of switch arm has the switch handle. This application can realize the singlehanded switching, reduces the telescopic disturbance of trepan under the mirror, reduces the damage to the operated person, improves the precision of operation.)

1. A combined type under-mirror trepan is characterized by comprising a large sleeve and a small sleeve, wherein the small sleeve is inserted into the large sleeve, a first rotating handle is arranged at the end part of the large sleeve, a second rotating handle is arranged at the end part of the small sleeve, an arc wedge opening is arranged at one end of the large sleeve far away from the first rotating handle, a plurality of annularly-arranged sawteeth are arranged at one end of the small sleeve far away from the second rotating handle, a positioning assembly is arranged between the large sleeve and the small sleeve,

positioning assembly

Included

A return spring between the large sleeve and the small sleeve;

a position-locking pin slidably connected to the first rotating handle;

a switch arm matched with the clamping pin;

a plurality of ring grooves arranged on the outer wall of the small sleeve;

an elastic member for driving the movement of the click pin;

the screens round pin slides along big telescopic radial direction, and the screens round pin card is gone into the draw-in groove and is fixed a position little sleeve, and the first handle of rotating is articulated to the switch arm, and the one end of switch arm articulates the connection screens round pin, and the other end of switch arm has the switch handle.

2. The combined under-mirror trepan of claim 1, wherein the elastic member is connected between the switch handle and the large sleeve, and when both end points of the elastic member are collinear with a hinge point of the switch arm, an elastic force generated by the elastic member is maximized.

3. The jointed under-mirror trepan of claim 1, wherein the switch handle has a closing safety at its end, the closing safety being a barb hinged at the end of the switch handle, the first rotary handle having a recess adapted to the barb, the barb being snapped into the recess.

4. The jointed under-the-mirror trepan of claim 2, wherein the retaining pin further comprises a guiding wedge, the small sleeve comprises a matching wedge, and the matching wedge and the guiding wedge cooperate to drive the retaining pin to move to the small sleeve position.

5. The combined under-mirror trepan of claim 4, wherein the highest annular groove of the small sleeve is a zero-position annular groove, and the matching wedge block is arranged above the zero-position annular groove.

6. The jointed under-mirror trepan of claim 1, wherein the switch arm has a waist slot, and the detent pin has a sliding contact extending into the waist slot.

7. The combined under-mirror trepan of any one of claims 1 to 6, wherein the end of the retaining pin near the small sleeve is provided with a ball head.

8. The combination under-mirror trepan of claim 7, wherein the number of the ring grooves is two.

Technical Field

The present invention relates to surgical instruments, and more particularly, it relates to a combination under-the-lens trepan.

Background

The existing under-mirror trepan generally needs the matching of a large sleeve and a small sleeve, sleeve conversion is needed in an operation, the small sleeve needs to be pulled out and then inserted into the large sleeve again after the small sleeve completes functions, the steps are complex, the operation time can be prolonged, and the energy of an operator is consumed.

Chinese patent publication No. CN201922389360.6, the name is the visual trepan saw of the dark bellmouth mirror of the pressor of the but improved generation limit, and this application discloses a visual trepan saw of the dark pressor of the dark bellmouth mirror of the but improved generation limit, including the base, the top of base inlays and has the trepan outer sleeve of trepan, the lower extreme threaded connection of trepan outer sleeve inner chamber has trepan saw under the mirror, the bottom fixed mounting of trepan saw has the connecting seat under the mirror, and the lower extreme of trepan outer sleeve inner chamber is provided with the internal thread, and the lower extreme in the trepan saw outside is provided with the external screw thread under the mirror, and the trepan saw passes through internal thread and external screw thread threaded connection under trepan outer sleeve and the mirror.

The large sleeve and the small sleeve in the scheme generate relative feeding in a threaded mode, and when the small sleeve performs trepan cutting, the large sleeve also needs to generate corresponding rotation, and the rotation of the large sleeve possibly generates relative friction with body tissues of an operator, so that unnecessary injury in the operation is caused. In the process of switching the large sleeve and the small sleeve, the process is also complicated, the large sleeve needs to be kept positioned at first, damage to the spinal cord caused by axial movement of the large sleeve and the small sleeve is avoided in the process, then the small sleeve rotates relative to the large sleeve, and due to the saw teeth at the tail end of the small sleeve, tissues can be cut in the rotating process, and ganglia are damaged.

Therefore, the combined under-mirror trepan allowing the large sleeve and the small sleeve to rotate relatively without generating relative rotation in the telescopic process of the large sleeve and the small sleeve is achieved, and the combined under-mirror trepan has the advantages of being convenient to switch and reliable in locking.

Disclosure of Invention

The invention overcomes the defect that multiple ends of the existing large sleeve and the existing small sleeve need to be matched when in switching, and provides a combined under-mirror trepan which can realize the switching of a single hand or even a single finger, reduce the disturbance of the under-mirror trepan and avoid the damage of the under-mirror trepan to body tissues.

A second object of the invention is to circumvent the risk of the small sleeve retracting into the large sleeve to fall out, so that the connection between the small sleeve and the large sleeve is reliable.

In order to solve the technical problems, the invention adopts the following technical scheme:

a combined type under-mirror trepan comprises a large sleeve and a small sleeve, wherein the small sleeve is inserted into the large sleeve, a first rotating handle is arranged at the end part of the large sleeve, a second rotating handle is arranged at the end part of the small sleeve, an arc wedge opening is arranged at one end of the large sleeve, which is far away from the first rotating handle, a plurality of annularly arranged sawteeth are arranged at one end of the small sleeve, which is far away from the second rotating handle, a positioning component is arranged between the large sleeve and the small sleeve,

positioning assembly

Included

A return spring between the large sleeve and the small sleeve;

a position-locking pin slidably connected to the first rotating handle;

a switch arm matched with the clamping pin;

a plurality of ring grooves arranged on the outer wall of the small sleeve;

an elastic member for driving the movement of the click pin;

the screens round pin slides along big telescopic radial direction, and the screens round pin card is gone into the draw-in groove and is fixed a position little sleeve, and the first handle of rotating is articulated to the switch arm, and the one end of switch arm articulates the connection screens round pin, and the other end of switch arm has the switch handle.

The external diameter of little sleeve is less than big telescopic internal diameter, and first rotation handle and second rotate the handle and play to the two spacing, and the extreme position between little sleeve and the big sleeve rotates the top of the first rotation handle of bottom butt of handle for the second, and little sleeve bottom this moment stretches out big telescopic bottom slightly. The sawtooth of little sleeve bottom is arranged along circumference, and the direction of each sawtooth is the same, and when little sleeve was made axial rotation, the sawtooth can realize cutting function.

The positioning assembly has the function that the clamping pin can be locked by pulling or pressing the switch handle through a single finger.

The elastic piece drives the clamping pin to move and is clamped into the annular groove, the annular groove and the clamping pin axially limit the space between the large sleeve and the small sleeve, and the large sleeve and the small sleeve can still perform circumferential relative rotation movement.

The switch arm receives to be stirred, carries out clockwise or anticlockwise rotation around the pin joint, and the screens round pin that the other end of switch arm articulated connection produced big telescopic radial motion relatively along with the motion of switch arm, and the annular is kept away from to the screens round pin, and little sleeve and big sleeve this moment no longer receive the restraint at axial direction, under the drive that receives compressed reset spring or external force, produced axial motion, little sleeve withdrawal or stretch out big sleeve. When the small sleeve generates enough relative displacement relative to the large sleeve and reaches another station, the clamping pin is driven to reset by the elasticity of the elastic piece to complete locking, and the large sleeve and the small sleeve can still keep relative rotation at the moment.

The device can realize the first invention, when in use, the instrument can be held by a plurality of fingers for positioning, the switch states of the large sleeve and the small sleeve are switched by one finger, the disturbance to the instrument is reduced, the damage to body tissues is reduced, and the operation efficiency is improved.

Preferably, the elastic member is connected between the switch handle and the large sleeve, and when both end points of the elastic member are collinear with a hinge point of the switch arm, the elastic force generated by the elastic member is maximized. The structure makes the elastic part compressed to the maximum when the points are collinear, the structure makes the switch handle move to the corresponding position and lock under the action of the elastic part when the switch handle crosses the collinear position, and the structure makes the state of the switch handle have the switch state and has the capability of maintaining the state, and the state is not changed unless the effect of overcoming the elastic force of the elastic part is achieved. This structure corresponds to the present application with the further object of facilitating the operation: when the small sleeve retracts completely and needs to extend again, the switch arm can be rotated to be in a state of no locking, then the effect of the elastic force of the reset spring is overcome, so that when the small sleeve moves to the position where the large sleeve extends, the small sleeve can participate in work, the small sleeve can be reset to the retraction state by the force of the reset spring when the applied pressure is loosened, the structure can adapt to the frequent matching and alternating process of the large sleeve and the small sleeve in an operation, and the switching operation is reduced.

Preferably, the end of the switch handle is provided with a closing fuse, the closing fuse is a barb hinged at the end of the switch handle, the first rotating handle is provided with a groove matched with the barb, and the barb is clamped in the groove. The structure is in order to further improve security and reliability, reaches the second purpose, closes the insurance through the setting, and it is spacing to carry out the rotation of switch handle around the pin joint, avoids the screens round pin to deviate from the annular, locks little sleeve, avoids it to deviate from.

Preferably, the clamping pin is also provided with a guide wedge block, the small sleeve is provided with a matching wedge block, and the matching wedge block and the guide wedge block are matched to drive the clamping pin to move to the position of the small sleeve. The structure is used for further realizing one-hand operation, when the small sleeve moves downwards relative to the large sleeve, the wedge surface of the matched wedge block is matched with the wedge surface of the guide wedge block to generate driving force in the radial direction relative to the large sleeve, the switch arm is pushed to cross the balance position, the switch arm enters a closed state from an open state, and the clamping pin locks the annular groove. When the switch is used, the switch is switched from the extending position to the retracting position, the switch can be automatically switched only by switching the state of the switch arm to the opening state, and then the switch state is selected as required; when the switch arm is switched from the retraction position to the extension position, the switch arm is only required to be switched to the opening state, then the small sleeve is pressed down by overcoming the reset spring, and the guide wedge block can be matched with the matching wedge block to realize automatic locking.

Preferably, the ring groove at the highest position of the small sleeve is a zero-position ring groove, and the matching wedge block is arranged above the zero-position ring groove. The zero position ring groove corresponds to the extending state of the small sleeve.

Preferably, the switch arm is provided with a waist groove, and the clamping pin is provided with a sliding contact which extends into the waist groove. The structure realizes the function of pushing the clamping pin to perform linear displacement when the switch arm rotates.

Preferably, the switch handle is flat, and the width of the switch handle is adapted to the width of the fingers. The structure enables the device to have better hand feeling, accords with human engineering, and reduces fatigue of operators.

Preferably, one end of the blocking pin close to the small sleeve is provided with a ball head. The structure reduces the friction force when the small sleeve rotates relative to the large sleeve, so that the large sleeve rotates more smoothly, and lubricating grease can be arranged in the ring groove.

Preferably, the number of the ring grooves is two.

Compared with the prior art, the invention has the beneficial effects that: (1) the endoscope ring saw sleeve switching device can realize one-hand switching, reduce disturbance to the endoscope ring saw sleeve, reduce damage to an operated person and improve the accuracy of an operation; (2) it has several reliable locking modes, and the small sleeve can not be separated from the large sleeve to cut off ganglion.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a schematic view of the latch pin, switch arm connection of the present invention;

FIG. 3 is a schematic view of embodiment 2 of the present invention;

in the figure:

the large-size sleeve comprises a large sleeve 1, a small sleeve 2, a first rotating handle 3, a second rotating handle 4, an arc wedge opening 5, sawteeth 6, a return spring 7, a clamping pin 8, a switch arm 9, a ring groove 10, an elastic piece 11, a switch handle 12, a closing fuse 13, a groove 14, a guide wedge block 15, a matching wedge block 16, a zero-position ring groove 17, a waist groove 18 and a sliding contact 19.

Detailed Description

The present disclosure is further described with reference to the following drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.

Example 1:

a combined under-mirror trepan is shown in figure 1 and comprises a large sleeve 1 and a small sleeve 2, wherein the small sleeve 2 is inserted into the large sleeve 1.

The tip of big sleeve 1 has first turning handle 3, and the one end that first turning handle 3 was kept away from to big sleeve 1 has arc wedge mouth 5, and the tip of little sleeve 2 has second turning handle 4, and the one end that second turning handle 4 was kept away from to little sleeve 2 has a plurality of sawtooth 6 of arranging annularly. The external diameter of little sleeve 2 is less than the internal diameter of big sleeve 1, and first turning handle 3 and second turning handle 4 play to the two spacing, and the extreme position between little sleeve 2 and the big sleeve 1 is the top of the first turning handle 3 of bottom butt of second turning handle 4, and little sleeve 2 bottom at this moment stretches out the bottom of big sleeve 1 slightly. The sawtooth 6 of small sleeve 2 bottom is arranged along circumference, and the direction of each sawtooth 6 is the same, and when small sleeve 2 was axial rotation, 6 can realize the cutting function of sawtooth.

As shown in fig. 1 and 2, a positioning assembly is arranged between the large sleeve 1 and the small sleeve 2, and the positioning assembly comprises a return spring 7 between the large sleeve 1 and the small sleeve 2, a position clamping pin 8 connected to the first rotating handle 3 in a sliding manner, a switch arm 9 matched with the position clamping pin 8, a plurality of annular grooves 10 arranged on the outer wall of the small sleeve 2, and an elastic member 11 driving the position clamping pin 8 to move. The core of the capture pin 8 has a hole through the switch arm 9. The first turning handle 3 is provided with a hole through which the switch arm 9 passes. The screens round pin 8 slides along the radial direction of big sleeve 1, and screens round pin 8 card is gone into the draw-in groove and is fixed a position little sleeve 2, and the articulated connection of switch arm 9 is at first rotating handle 3, and the one end of switch arm 9 is articulated to be connected screens round pin 8, and the other end of switch arm 9 has switch handle 12. The elastic member 11 is connected between the switch handle 12 and the large sleeve 1, and when the connection line of the elastic member 11 connected to the connection point of the switch handle 12 and the hinge point of the switch arm 9 is in a horizontal position, the elastic force generated by the elastic member 11 being pulled is the largest. The elastic member 11 is stretched to the maximum when the connection line is at a horizontal point, and the structure is such that when the switch handle 12 goes beyond the horizontal position, it will move to the corresponding position and lock under the action of the elastic member 11, and the structure is such that the state of the switch handle 12 has an on-off state and has the ability to maintain this state, and the state will not change unless it is reached to overcome the elastic force of the elastic member 11. One end of the clamping pin 8 close to the small sleeve 2 is provided with a ball head. The structure reduces the friction force when the small sleeve 2 rotates relative to the large sleeve 1, so that the small sleeve rotates more smoothly, and lubricating grease can be arranged in the ring groove 10. The switch handle 12 is flat, and the width of the switch handle 12 is adapted to the width of the fingers. The structure enables the device to have better hand feeling, accords with human engineering, and reduces fatigue of operators. The switch arm 9 is provided with a waist groove 18, the position clamping pin 8 is provided with a sliding contact 19, and the sliding contact 19 extends into the waist groove 18. The structure realizes the function of pushing the clamping pin 8 to perform linear displacement when the switch arm 9 rotates. The end of the switch handle 12 has a closing fuse 13, the closing fuse 13 is a barb hinged at the end of the switch handle 12, the first turning handle 3 has a groove 14 adapted to the barb, and the barb is snapped into the groove 14. The structure is for further improving security and reliability, reaches the second purpose, closes insurance 13 through the setting, and it is spacing to rotate around the pin joint to switch handle 12, avoids the screens round pin 8 to deviate from annular 10, locks little sleeve 2, avoids it to deviate from.

The number of the ring grooves 10 is two. The ring groove 10 at the highest position of the small sleeve 2 is a zero-position ring groove 17, and the matching wedge block 16 is arranged above the zero-position ring groove 17. The zero position ring groove 17 corresponds to the extending state of the small sleeve 2.

The positioning component has the function of switching the positioning state of the clamping pin 8 to the ring groove 10 by pulling up or pressing down the switch handle 12 by a single finger. The elastic piece 11 drives the position clamping pin 8 to move and is clamped into the annular groove 10, the annular groove 10 and the position clamping pin 8 axially limit the position between the large sleeve 1 and the small sleeve 2, and the large sleeve 1 and the small sleeve 2 can still perform circumferential relative rotation movement. Switch arm 9 receives to be stirred, carries out clockwise or anticlockwise rotation around the pin joint, and the other end of switch arm 9 articulates the screens round pin 8 of connecting and produces the radial motion of big sleeve 1 relatively along with the motion of switch arm 9, and the annular 10 is kept away from to screens round pin 8, and little sleeve 2 and big sleeve 1 at this moment no longer receive the restraint at axial direction, under the drive that receives compressed reset spring 7 or external force, produce axial motion, little sleeve 2 withdrawal or stretch out big sleeve 1. When the small sleeve 2 is displaced relative to the large sleeve 1 enough to reach another working position, the switch handle 12 is rotated reversely again to complete the locking, and the large sleeve 1 and the small sleeve 2 still keep rotating relatively. During the use, can hold the apparatus with many fingers and fix a position, the on-off state of locating component is switched to a finger, reduces the disturbance to the apparatus, reduces the damage of health tissue, improves operation efficiency.

When the small sleeve 2 retracts completely, the switch arm 9 can be rotated to be in a state of no locking, then the finger moves to the position of the second rotating handle 4, the force is applied to overcome the reset spring 7, the small sleeve 2 moves and extends out of the large sleeve 1, the positioning assembly is still in an open state at the moment, the pressure applied by loosening can be reset to a retracting state under the force of the reset spring 7, the structure can adapt to the situation that the large sleeve 1 and the small sleeve 2 are frequently matched and alternated in an operation, and the switching operation is reduced.

Example 2:

the present embodiment has the following features on the basis of embodiment 1:

as shown in fig. 3, the catch pin 8 further has a guide wedge 15, the small sleeve 2 has a mating wedge 16, and the mating wedge 16 and the guide wedge 15 cooperate to drive the catch pin 8 to move toward the small sleeve 2. The structure is used for further realizing one-hand operation, when the small sleeve 2 moves downwards relative to the large sleeve 1, the wedge surface of the matching wedge block 16 is matched with the wedge surface of the guide wedge block 15 to generate driving force in the radial direction relative to the large sleeve 1, the switch arm 9 is pushed to cross a balance position, the switch arm 9 enters a closed state from an open state, and the clamping pin 8 locks the annular groove 10. When in use, the switch arm is switched from the extending position to the retracting position, the switch arm can be automatically switched only by switching the state of the switch arm 9 to the opening state, and then the switch state is selected as required; when switching from the retracted position to the extended position, the switch arm 9 is switched to the open state, and then the small sleeve 2 is pressed down against the return spring 7, and the guide wedge 15 is engaged with the engagement wedge 16, so that automatic locking is realized.

The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.