CN118304053A - Sheath adapter and operation auxiliary system - Google Patents

Abstract

The invention discloses a sheath adapter and an operation auxiliary system, and relates to the technical field of medical instruments. The sheath adapter includes a turret, a handle drive assembly, and a sheath drive assembly. The sheath tube adapter is used for controlling a sheath tube unit, the sheath tube unit comprises a handle, a sheath tube and a knob used for driving the sheath tube to bend, the handle is arranged on the rotating frame, and the axial direction of the handle is coincident with the rotating shaft of the rotating frame; the handle driving assembly comprises a first transmission shaft which is in transmission connection with the rotating frame to drive the rotating frame to rotate; the sheath driving assembly comprises a second transmission shaft, and one end of the second transmission shaft is in transmission connection with the knob so as to drive the knob to rotate. This sheath adapter can realize the remote control to sheath system, improves medical personnel's operation environment, can improve the stability and the accuracy of operation simultaneously, reduces the operation degree of difficulty, shortens the study curve that the doctor mastered complicated art formula.

Description

Sheath adapter and operation auxiliary system

Technical Field

The invention relates to the technical field of medical instruments, in particular to a sheath adapter and an operation auxiliary system.

Background

The mitral valve is a one-way valve located between the left atrium and the left ventricle of the heart, and a normally healthy mitral valve can allow blood to flow from the left atrium to the left ventricle while avoiding backflow of blood from the left ventricle to the left atrium. When the leaflets of the mitral valve or their associated structures undergo an organic or functional change, the anterior and posterior leaflets of the mitral valve do not coapt properly, and when the left ventricle of the heart contracts, the mitral valve fails to close completely, resulting in blood regurgitation from the left ventricle to the left atrium, causing a series of pathophysiological changes known as "mitral regurgitation".

At present, mitral regurgitation is generally treated by minimally invasive surgery, that is, a valve repair device is delivered to the mitral valve by a sheath system, and the diseased mitral valve is repaired by remote operation outside the patient's body, thereby treating mitral regurgitation. The sheath system is a multi-layered structure in which the outer sheath needs to follow the femoral vein into the right atrium and then through the septum and then into the left atrium to ensure delivery of the valve repair device to the mitral valve.

However, the sheath system needs manual operation by a doctor when in use, has higher operation difficulty, has higher requirements on the technical level and clinical experience of the doctor, has longer learning curve of the doctor, and restricts the development of surgery or the clinical use of instruments to a certain extent. In the operation process, most of doctors need to operate under the condition of cooperative coordination of CT equipment, so that medical staff are exposed in the environment with radiation for a long time, and the health of the medical staff is hurt to a certain extent.

In view of the foregoing, there is a need to develop a sheath adapter and surgical assistance system that address the foregoing issues.

Disclosure of Invention

The invention aims to provide a sheath adapter and an operation auxiliary system, which can realize remote control of a sheath system, improve the working environment of medical staff, improve the stability and the accuracy of an operation, reduce the operation difficulty and shorten the learning curve of a doctor for grasping a complex operation type.

To achieve the purpose, the invention adopts the following technical scheme:

a sheath adapter for controlling a sheath unit comprising a handle, a sheath, and a knob for driving the sheath to bend, the sheath adapter comprising:

the rotating frame is provided with a handle, and the axial direction of the handle is overlapped with the rotating shaft of the rotating frame;

The handle driving assembly comprises a first transmission shaft which is in transmission connection with the rotating frame to drive the rotating frame to rotate;

the sheath driving assembly comprises a second transmission shaft, and one end of the second transmission shaft is in transmission connection with the knob so as to drive the knob to rotate.

Preferably, the handle driving assembly further comprises a handle driving worm wheel, the first transmission shaft is a worm, the handle driving worm wheel is fixedly connected with the rotating frame, and the first transmission shaft is meshed with the handle driving worm wheel.

Preferably, the rotating frame comprises a base and a shell which are detachably connected, and the handle is fixedly arranged between the base and the shell.

Preferably, the sheath driving assembly further comprises a first bevel gear, a second bevel gear and a transmission worm, the first bevel gear and the second bevel gear are both rotatably arranged on the rotating frame, the first bevel gear is in transmission connection with the second transmission shaft, the second bevel gear is in transmission connection with the transmission worm, the knob is a worm wheel, and the transmission worm is meshed with the knob.

Preferably, the sheath driving assembly further comprises a synchronous belt, and two ends of the synchronous belt are respectively wound on the second bevel gear and the transmission worm so as to enable the second bevel gear and the transmission worm to synchronously rotate.

Preferably, the second transmission shaft comprises a power input rod, a connecting rod and a power output rod, wherein the power input rod is connected with the connecting rod and the connecting rod is connected with the power output rod through universal joints, and the first bevel gear is arranged on the power output rod.

Preferably, the connecting rod comprises a first sliding rod and a second sliding rod which can slide relatively along the axial direction, and the second sliding rod is sleeved outside the first sliding rod.

Preferably, the inner wall of the second sliding rod is provided with an anti-rotation groove extending along the axial direction, the outer wall of the first sliding rod is convexly provided with an anti-rotation sliding block, and the anti-rotation sliding block is arranged in the anti-rotation groove in a sliding manner.

Preferably, the sheath adapter further comprises a mounting frame, the first transmission shaft, the second transmission shaft and the rotating frame are all rotatably arranged on the mounting frame, a hanging piece is arranged on the mounting frame, and a mounting groove is formed between the hanging piece and the mounting frame.

The surgical auxiliary system comprises the sheath adapter and further comprises a power device, wherein the power device can respectively drive the first transmission shaft and the second transmission shaft to rotate.

The invention has the beneficial effects that:

The invention provides a sheath adapter and a surgical auxiliary system. In the sheath adapter, the sheath driving assembly is used for driving the sheath to bend, and is specifically realized by driving the knob to rotate through the second transmission shaft. When the sheath tube is bent, the handle can be driven to rotate by the handle driving assembly, and the rotating frame is driven to rotate by the first transmission shaft. When the handle rotates, the bending direction of the sheath tube can be adjusted to ensure that the sheath tube can smoothly enter the left atrium so as to successfully convey the valve repair device to the mitral valve.

This sheath adapter can realize the remote control to the sheath, improves medical personnel's operation environment, can improve the stability and the accuracy of operation simultaneously, reduces the operation degree of difficulty, shortens the study curve that the doctor mastered complicated art.

Drawings

FIG. 1 is a schematic view of a sheath unit and sheath adapter provided by the present invention;

FIG. 2 is an exploded view of a sheath adapter provided by the present invention;

FIG. 3 is a second exploded view of the sheath adapter provided by the present invention;

FIG. 4 is a cross-sectional view of a connecting rod provided by the present invention;

fig. 5 is a schematic view of the structure of the sheath adapter provided by the present invention.

In the figure:

201. a sheath unit; 2011. a handle; 2012. a sheath; 2013. a knob;

2. A sheath adapter;

21. A handle drive assembly; 211. a first drive shaft; 212. the handle drives the worm wheel; 2121. a half worm wheel;

22. A sheath drive assembly; 221. a second drive shaft; 2211. a power input lever; 2212. a connecting rod; 22121. a first slide bar; 222122, a second slide bar; 22123. an anti-rotation groove; 22124. an anti-rotation sliding block; 2213. a power output lever; 222. a first bevel gear; 223. a second bevel gear; 224. a drive worm; 225. a synchronous belt;

23. a rotating frame; 231. a base; 232. a housing;

24. A mounting frame; 241. a hitching member; 242. a mounting groove; 243. and (5) hanging the retaining wall.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, and may be, for example, either fixed or removable; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Unless expressly stated or limited otherwise, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

At present, mitral regurgitation is generally treated by minimally invasive surgery, namely, a valve repair device is conveyed to the mitral valve by a conveying system, and the diseased mitral valve is repaired by remote operation outside a patient, so that mitral regurgitation is treated. The delivery system generally includes a plurality of sheath units, which typically include a sheath and an operating device, such as a handle, coupled to the sheath for controlling movement of the sheath. In an embodiment of the invention, the delivery system may include an outer sheath unit, a middle sheath unit, and an inner sheath unit.

The outer sheath unit comprises an outer sheath tube, the outer sheath tube needs to enter the right atrium along the femoral vein, and after the outer sheath tube is bent, the direction of the end part of the outer sheath tube is adjusted by rotating the outer sheath tube, so that the outer sheath tube can be ensured to be opposite to the atrial septum, and the outer sheath tube can penetrate the atrial septum and enter the left atrium under the action of a guide wire.

The middle sheath unit comprises a middle sheath tube, the middle sheath tube penetrates through the outer sheath tube and can extend out of the end portion of the outer sheath tube, the extending portion of the middle sheath tube can be bent left and right in a first plane and can be bent left and right in a second plane, and the first plane and the second plane are arranged at an included angle. When the outer sheath reaches the left atrium, the middle sheath passes through the outer sheath and extends out of the left atrium, and in the process of moving the middle sheath relative to the outer sheath, the bending direction and the bending degree of the middle sheath in the first plane and the second plane need to be adjusted in real time according to the bending direction and the bending degree of the outer sheath, so that the middle sheath can reach a proper position.

The inner sheath unit comprises an inner sheath tube which is arranged in the middle sheath tube in a penetrating way and can extend out of the end part of the middle sheath tube, the end part of the inner sheath tube is detachably connected with the valve repair device, the inner sheath tube can penetrate through the middle sheath tube and extend out of the left atrium, and then the inner sheath tube bends towards the position of the mitral valve and continues to extend out towards the mitral valve, so that the valve repair device is conveyed to the mitral valve. In particular, the valve repair device may be a clip capable of holding two valves of the mitral valve, respectively.

However, the conveying system needs manual operation by a doctor when in use, has higher operation difficulty, has higher requirements on the technical level and clinical experience of the doctor, has longer learning curve of the doctor, and restricts the development of surgery or the clinical use of instruments to a certain extent. In the operation process, most of doctors need to operate under the condition of cooperative coordination of CT equipment, so that medical staff are exposed in the environment with radiation for a long time, and the health of the medical staff is hurt to a certain extent.

The present embodiment provides a sheath adapter for controlling the sheath unit 201. In the present embodiment, the sheath unit 201 is exemplified as an outer sheath unit, and as shown in fig. 1, the sheath unit 201 includes a handle 2011, a sheath 2012, and a knob 2013 for driving the sheath 2012 to bend.

As shown in fig. 2 and 3, the sheath adapter includes a turret 23, a handle drive assembly 21, and a sheath drive assembly 22. The handle 2011 is provided to the turret 23, and the axial direction of the handle 2011 coincides with the rotation axis of the turret 23. The handle driving assembly 21 comprises a first transmission shaft 211, and the first transmission shaft 211 is in transmission connection with the rotating frame 23 to drive the rotating frame 23 to rotate. The sheath driving assembly 22 includes a second transmission shaft 221, and one end of the second transmission shaft 221 is in driving connection with the knob 2013 to drive the knob 2013 to rotate.

In the sheath adapter, the sheath driving assembly 22 can drive the knob 2013 to rotate by the second transmission shaft 221 to drive the sheath 2012 to bend, and after the sheath 2012 bends, the handle 2011 is driven to rotate by the handle driving assembly 21 through the first transmission shaft 211 to drive the rotating frame 23 to rotate. When the handle 2011 is rotated, the bending direction of the sheath 2012 can be adjusted, so that the end of the sheath 2012 is adjusted to be opposite to the atrial septum, and the sheath 2012 can smoothly enter the left atrium to successfully convey the valve repair device to the mitral valve.

This sheath adapter can realize the remote control to sheath 2012 system, improves medical personnel's operational environment, can improve the stability and the accuracy of operation simultaneously, reduces the operation degree of difficulty, shortens the doctor and masters the learning curve of complicacy art formula.

The present embodiment also provides a surgical assistance system including the sheath adapter 2, and further including a power device capable of driving the first transmission shaft 211 and the second transmission shaft 221 to rotate, respectively. It will be appreciated that the power device is configured to provide rotational power to the first and second shafts 211 and 221, and an operator only needs to remotely control the number of turns of the first and second shafts 211 and 221 to control the bending of the sheath 2012 and the rotation of the handle 2011.

As shown in fig. 2 and 3, the handle driving assembly 21 further includes a handle driving worm gear 212, the first transmission shaft 211 is a worm, the handle driving worm gear 212 is fixedly connected with the rotating frame 23, and the first transmission shaft 211 is meshed with the handle driving worm gear 212. Utilize the transmission structure of worm gear to drive rotating turret 23 rotation, can change the transmission direction, make the relative position of handle 2011 and first transmission shaft 211 more reasonable, can also play reduction gears's effect simultaneously, make rotating turret 23's rotational speed be less than the rotational speed of first transmission shaft 211 far away to make rotating turret 23's rotation more steady, and be convenient for accurate control rotating turret 23 pivoted angle improves the security of operation.

As shown in fig. 2 and 3, the turret 23 includes a base 231 and a housing 232 detachably connected, and a handle 2011 is fixedly disposed between the base 231 and the housing 232. The housing 232 and the base 231 can fix the handle 2011, and the handle 2011 can be conveniently detached and installed, so that the pre-operation preparation efficiency is improved.

It is understood that the delivery system of the present invention may include a plurality of sheath units 201, wherein the sheaths 2012 of the plurality of sheath units 201 are nested, that is, the sheaths 2012 of the other sheath units 201 pass through the sheaths 2012 of the sheath units 201, so that both ends of the sheath units 201 need to be fixed. To this end, the handle driving worm gear 212 comprises two detachably connected half worm gears 2121, the two half worm gears 2121 can be buckled with each other to form a complete handle driving worm gear 212, and the handle 2011 is disposed between the two half worm gears 2121.

Preferably, the sheath driving assembly 22 further includes a first bevel gear 222, a second bevel gear 223, and a driving worm 224, wherein the first bevel gear 222 and the second bevel gear 223 are both rotatably disposed on the rotating frame 23, the first bevel gear 222 is in driving connection with the second transmission shaft 221, the second bevel gear 223 is in driving connection with the driving worm 224, the knob 2013 is a worm wheel, and the driving worm 224 is meshed with the knob 2013.

The second transmission shaft 221 can drive the transmission worm 224 to rotate through the first bevel gear 222 and the second bevel gear 223, and further drive the knob 2013 to rotate through the transmission worm 224 to adjust the bending direction and the bending degree of the sheath 2012. Through the transmission cooperation between first bevel gear 222, second bevel gear 223 and drive worm 224 for the mounted position of second transmission shaft 221 is unrestricted, in this embodiment, second transmission shaft 221 is comparatively close to first transmission shaft 211, and the structure is compacter, saves space.

Specifically, the sheath driving assembly 22 further includes a timing belt 225, and two ends of the timing belt 225 are respectively wound around the second bevel gear 223 and the driving worm 224, so that the second bevel gear 223 and the driving worm 224 rotate synchronously. The synchronous belt 225 is tensioned by the second bevel gear 223 and the driving worm 224, so that synchronous rotation of the second bevel gear 223 and the driving worm 224 is guaranteed, meanwhile, the synchronous belt 225 can reduce the assembly precision requirement on the second bevel gear 223 and the driving worm 224, and can guarantee the driving precision, and the cost is lower.

As shown in fig. 3, the rotating frame 23 is driven by the first transmission shaft 211 to rotate, so that the angle between the first bevel gear 222 and the second transmission shaft 221 is changed, so that the rotating frame 23 is not limited in rotation, the second transmission shaft 221 includes a power input rod 2211, a connecting rod 2212 and a power output rod 2213, the power input rod 2211 and the connecting rod 2212 and the power output rod 2213 are all connected by universal joints, and the first bevel gear 222 is disposed on the power output rod 2213.

Specifically, the axial direction of power input rod 2211 is kept unchanged so that the means for driving power input rod 2211 to rotate can be stably connected to power input rod 2211. When the rotating frame 23 rotates, the connecting rod 2212 also moves along with the rotating frame, and the universal joint can ensure synchronous rotation between the connecting rod 2212 and the power input rod 2211 and between the connecting rod 2212 and the power output rod 2213 along respective axial directions while the angle between the connecting rod 2212 and the power input rod 2211 and the angle between the connecting rod 2213 are changed, so that power transmission is not affected.

As shown in fig. 4, the connecting rod 2212 includes a first slide rod 22121 and a second slide rod 22122 that can slide relatively along the axial direction, and the second slide rod 22122 is sleeved outside the first slide rod 22121. When the rotating frame 23 rotates, not only the angles among the connecting rod 2212, the power input rod 2211 and the power output rod 2213 can be changed, but also the distance between the two ends of the connecting rod 2212 can be changed, and the first sliding rod 22121 and the second sliding rod 22122 which can slide relatively can extend or shorten along with the rotation of the rotating frame 23, so that the connecting rod 2212 is prevented from being broken or the rotation of the rotating frame 23 is prevented from being limited.

In order to avoid the influence of the relative rotation between the first slide rod 22121 and the second slide rod 22122 on the power transmission, an axially extending anti-rotation groove 22123 is provided on the inner wall of the second slide rod 22122, an anti-rotation sliding block 22124 is protruding on the outer wall of the first slide rod 22121, and the anti-rotation sliding block 22124 is slidably disposed in the anti-rotation groove 22123. The anti-rotation slider 22124 is matched with the anti-rotation groove 22123, so that the sliding between the first slide rod 22121 and the second slide rod 22122 can be guided, and the relative rotation between the first slide rod 22121 and the second slide rod 22122 can be avoided.

Further, the outer wall of the first slide rod 22121 is convexly provided with a plurality of anti-rotation sliding blocks 22124, the inner wall of the second slide rod 22122 is provided with a plurality of anti-rotation grooves 22123 extending along the axial direction, when the power input rod 2211 rotates, the first slide rod 22121 is abutted to the anti-rotation grooves 22123 through the anti-rotation sliding blocks 22124, so that the second slide rod 22122 is driven to rotate, the plurality of anti-rotation sliding blocks 22124 can bear force evenly, meanwhile, the force born by each anti-rotation sliding block 22124 can be reduced, the load is reduced, and the service life is prolonged.

In this embodiment, two anti-rotation sliding blocks 22124 are convexly arranged on the outer wall of the first sliding rod 22121, the two anti-rotation sliding blocks 22124 are away from each other, and two anti-rotation grooves 22123 extending along the axial direction are formed on the inner wall of the second sliding rod 22122.

As shown in fig. 1 to 3 and fig. 5, the sheath adapter 2 further includes a mounting frame 24, the first transmission shaft 211, the second transmission shaft 221 and the rotating frame 23 are rotatably disposed on the mounting frame 24, a hanging piece 241 is disposed on the mounting frame 24, and a mounting groove 242 is formed between the hanging piece 241 and the mounting frame 24. In the second transmission shaft 221, a structure rotationally connected to the mounting frame 24 is a power input rod 2211. The sheath adapter 2 is secured to the power unit by a mounting bracket 24.

Specifically, the power unit is convexly provided with a mounting projection that is inserted into the mounting groove 242 to fixedly connect the sheath adapter 2 with the power unit. The sheath adapter 2 is attached to the power unit by sliding the attachment projection into the attachment groove 242 from one side of the attachment groove 242.

Further, the portion of the hooking member 241 located at the notch of the mounting groove 242 extends downward to form a hooking retaining wall 243, so that the mounting groove 242 is L-shaped, and the mounting protrusion is L-shaped, and after the mounting protrusion slides into the mounting groove 242, the sheath adapter 2 and the power device can be firmly fixed under the limitation of the hooking retaining wall 243 and the mounting frame 24.

The foregoing is merely exemplary of the present invention, and those skilled in the art should not be considered as limiting the invention, since modifications may be made in the specific embodiments and application scope of the invention in light of the teachings of the present invention.

Claims (10)

1. A sheath adapter for controlling a sheath unit (201), the sheath unit (201) comprising a handle (2011), a sheath (2012) and a knob (2013) for driving the sheath (2012) to bend, characterized in that the sheath adapter comprises:

A rotating frame (23), wherein the handle (2011) is arranged on the rotating frame (23), and the axial direction of the handle (2011) is overlapped with the rotating shaft of the rotating frame (23);

The handle driving assembly comprises a first transmission shaft (211), and the first transmission shaft (211) is in transmission connection with the rotating frame (23) to drive the rotating frame (23) to rotate;

The sheath driving assembly comprises a second transmission shaft (221), and one end of the second transmission shaft (221) is in transmission connection with the knob (2013) to drive the knob (2013) to rotate.

2. The sheath adapter according to claim 1, wherein the handle drive assembly further comprises a handle drive worm gear (212), the first drive shaft (211) being a worm, the handle drive worm gear (212) being fixedly connected to the turret (23), the first drive shaft (211) being meshed with the handle drive worm gear (212).

3. Sheath adapter according to claim 1, characterized in that the turret (23) comprises a detachably connected seat (231) and a housing (232), the handle (2011) being fixedly arranged between the seat (231) and the housing (232).

4. The sheath adapter according to claim 1, wherein the sheath drive assembly further comprises a first bevel gear (222), a second bevel gear (223) and a drive worm (224), the first bevel gear (222) and the second bevel gear (223) are both rotatably arranged on the turret (23), the first bevel gear (222) is in driving connection with the second drive shaft (221), the second bevel gear (223) is in driving connection with the drive worm (224), the knob (2013) is a worm gear, and the drive worm (224) is meshed with the knob (2013).

5. The sheath adapter according to claim 4, wherein the sheath drive assembly further comprises a timing belt (225), and both ends of the timing belt (225) are wound around the second bevel gear (223) and the driving worm (224), respectively, so that the second bevel gear (223) and the driving worm (224) rotate synchronously.

6. The sheath adapter according to claim 4, wherein the second drive shaft (221) comprises a power input rod (2211), a connecting rod (2212) and a power output rod (2213), wherein the power input rod (2211) and the connecting rod (2212) and the power output rod (2213) are connected by universal joints, and the first bevel gear (222) is arranged on the power output rod (2213).

7. The sheath adapter according to claim 6, wherein the connecting rod (2212) comprises a first slide rod (22121) and a second slide rod (22122) which can slide relatively along the axial direction, and the second slide rod (22122) is sleeved outside the first slide rod (22121).

8. The sheath adapter according to claim 7, wherein an axially extending anti-rotation groove (22123) is provided in an inner wall of the second slide bar (22122), an anti-rotation slider (22124) is provided protruding from an outer wall of the first slide bar (22121), and the anti-rotation slider (22124) is slidably arranged in the anti-rotation groove (22123).

9. The sheath adapter according to any one of claims 1-8, further comprising a mounting frame (24), wherein the first transmission shaft (211), the second transmission shaft (221) and the rotating frame (23) are rotatably arranged on the mounting frame (24), a hanging piece (241) is arranged on the mounting frame (24), and a mounting groove (242) is formed between the hanging piece (241) and the mounting frame (24).

10. A surgical assistance system, comprising a sheath adapter according to any one of claims 1 to 9, and further comprising power means capable of driving the rotation of the first transmission shaft (211) and the second transmission shaft (221), respectively.