CN212466058U - Handle for delivering implant, catheter assembly and delivery system - Google Patents

Abstract

The utility model discloses a handle, a catheter component and a delivery system for delivering an implant, wherein the handle comprises a handle shell, a driving component and a transmission component; the proximal end of the handle shell is provided with a first connecting part; the driving part is used for controlling the transmission part to axially move relative to the handle shell, a second connecting part is arranged at the far end of the transmission part, and the handle is detachably connected with the catheter assembly through the first connecting part and the second connecting part. The utility model discloses insert the handle with the catheter subassembly, the connection can be dismantled to the near-end of handle near-end and catheter subassembly, and the connection can be dismantled with the outer tube seat to the drive disk assembly in the handle, can reduce the cross sectional dimension of handle simultaneously, can realize the quick withdrawal of inner tube subassembly. If handle failure occurs during the operation, the handle can be quickly disassembled and replaced.

Description

Handle for delivering implant, catheter assembly and delivery system

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a handle, tubing assembly and conveying system for carrying implant.

Background

The survey shows that the probability of the middle-aged and the elderly suffering from coronary heart disease, cardiovascular and cerebrovascular diseases, valvular heart disease, tumor and other diseases is increased year by year. These diseases directly affect the quality of life and even the life safety of the elderly. Traditional surgical treatment is still the first choice for patients with serious diseases, but for patients with advanced age, complicated multiple organ diseases, chest-open operation history and poor body recovery function, the traditional surgical operation has high risk and high death rate, and some patients even have no operation chance. In the last decade, the international intervention has made a remarkable progress through continuous exploration, and becomes the branch of the most promising field of intervention.

Interventional therapy is a brand new treatment technology which is developed in recent years internationally, and the principle of the interventional therapy is that a modern high-tech means is used for carrying out tiny wound treatment, and under the guidance of medical imaging equipment, a special precise instrument is introduced into a human body to carry out diagnosis and local treatment on internal lesions. The technique has the characteristics of no operation, small wound, quick recovery, good effect and the like, and avoids the harm to patients caused by traditional surgical operations.

The handle is used as a power source of the whole interventional therapy, and generally, a pure manual handle, a pure electric handle or a manual and electric mixed handle is adopted, and sufficient safety, effectiveness and economical efficiency are required to be ensured. On one hand, the handle has the risk of failure during the operation, and if the existing handle has a safety failure, the scheme of emergency conversion from an interventional operation to a surgical operation can be generally adopted, which can bring greater physical trauma to the patient and even threaten the life; on the other hand, the handle contains more parts, so that the handle on the market can not be reused, so that the cost is higher, the corresponding operation cost is higher, and the economic pressure of a patient is higher.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a handle, tubing assembly and conveying system for carrying implant is provided, can the quick replacement handle when the handle breaks down in the operation process, avoid the operation risk, simultaneously, can improve utilization ratio, the reduce cost of handle.

The technical solution adopted by the present invention to solve the above technical problems is to provide a handle for delivering an implant, comprising a handle housing, a driving part and a transmission part; the proximal end of the handle shell is provided with a first connecting part; the driving part is used for controlling the transmission part to axially move relative to the handle shell, a second connecting part is arranged at the far end of the transmission part, and the handle is detachably connected with the catheter assembly through the first connecting part and the second connecting part.

Preferably, the first connecting part includes that the axial is upwards extended dodges the groove and radially extends the draw-in groove, dodge the groove with the draw-in groove sets up at staggering in week.

Preferably, the number of the avoidance grooves is multiple, and the avoidance grooves are uniformly distributed in the circumferential direction.

Preferably, the driving part comprises a knob, the transmission part comprises a screw rod, the knob is circumferentially arranged on the handle shell, the screw rod is arranged in the handle shell, the knob, the screw rod and the handle shell are coaxially arranged, and the knob is in threaded fit with the screw rod.

Preferably, the second connecting part is arranged at the far end of the screw rod, and the second connecting part is a threaded interface.

Preferably, the handle shell is internally and oppositely provided with a first semicircular ring and a second semicircular ring, the first semicircular ring and the second semicircular ring are arranged in a plurality of axial directions, and the first semicircular ring and the second semicircular ring provide a guiding effect for the screw rod.

Preferably, two sides of the first semicircular ring or the second semicircular ring are provided with cavities.

Another technical solution adopted by the present invention to solve the above technical problems is to provide a catheter assembly for delivering an implant, the catheter assembly comprising an inner tube assembly, an outer tube and an outer tube holder, the inner tube assembly comprising an inner tube; the proximal end of the inner tube assembly is provided with a third connecting part; the inner pipe penetrates through the outer pipe seat and is arranged in the outer pipe, the outer pipe seat is movably sleeved outside the inner pipe, a fourth connecting part is arranged at the near end of the outer pipe seat, and the catheter assembly is detachably connected with the handle through the third connecting part and the fourth connecting part.

Preferably, the near end of the inner tube is detachably connected with an inner tube emptying tube, the outer side of the far end of the inner tube emptying tube is provided with the third connecting part, and the third connecting part is a protrusion.

Preferably, the detachable connection mode between the inner pipe and the inner pipe emptying pipe is threaded connection, buckling connection or clamping groove connection.

Preferably, the fourth connecting member is an internal thread provided inside the proximal end of the outer tube base.

Preferably, a sealing ring is embedded in the inner side of the outer tube seat, and the inner side of the sealing ring is in contact with the outer side of the inner tube assembly.

Another technical solution adopted by the present invention to solve the above technical problems is to provide a delivery system for delivering an implant, comprising a handle and a catheter assembly, wherein the handle is the above handle, and the catheter assembly is the above catheter assembly; the first connecting part is matched with the third connecting part and is detachably connected with the third connecting part; the second connecting part is matched with the fourth connecting part and is detachably connected with the fourth connecting part.

Preferably, the near-end of handle casing is provided with dodges groove and draw-in groove, the near-end of inner tube can be dismantled and is connected with inner tube evacuated tube, the distal end outside of inner tube evacuated tube is provided with the arch, the arch can pass dodge the groove, the card is established after rotatory predetermined angle in the draw-in groove.

Preferably, the transmission part comprises a screw rod, the far end of the screw rod is provided with a threaded interface, the near end of the outer tube seat is provided with an internal thread matched with the threaded interface, and the far end of the screw rod is in threaded connection with the near end of the outer tube seat.

Preferably, the distal end outside of inner tube evacuation pipe sets up first arch and second arch, the near-end of handle casing sets up first groove, the second of dodging and dodges groove, first draw-in groove and second draw-in groove, first arch with the second arch is 180 degrees distributions in week, first dodge the groove with the second dodges the groove and is 180 degrees distributions in week, first draw-in groove with the second draw-in groove is 180 degrees distributions in week, just first draw-in groove first dodge the groove the second draw-in groove with the second dodges the groove and is 90 degrees distributions in week in proper order.

The utility model discloses contrast prior art has following beneficial effect: the utility model provides a handle, catheter subassembly and conveying system for carrying implant, the utility model discloses insert the handle with the catheter subassembly, the connection can be dismantled to the near-end of handle near-end and catheter subassembly, and the connection can be dismantled with outer tube seat to the drive disk assembly in the handle, has realized dismantling between handle and the catheter subassembly and has connected, and the connection process is simple, has still reduced the cross sectional size of handle, makes the handle become slim and graceful small and exquisite, convenient operation. Meanwhile, the near end of the inner pipe assembly is detachably connected with the inner pipe emptying pipe, so that the inner pipe assembly can be quickly withdrawn. If take place handle trouble in the operation process, can dismantle the handle fast and change, consequently, the utility model discloses can deal with the safe risk that the handle became invalid fast, avoid truning into the surgery operation to and bring bigger wound for the patient because of the handle problem by the intervention operation. Meanwhile, the handle can be repeatedly used, the cost of each operation is reduced, and the economic pressure of a patient is reduced. The utility model provides an evacuation pipe is in the pipe subassembly rather than being in the handle, need not consider when dismantling in the liquid in the evacuation pipe flows the handle, but reuse safely of handle.

Drawings

Fig. 1 is a schematic view of the overall structure of a conveying system according to an embodiment of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure of the handle in the embodiment of the present invention

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic view of a catheter assembly according to an embodiment of the present invention;

fig. 5a is a schematic cross-sectional view of a conveying system according to an embodiment of the present invention; FIG. 5b is a schematic view of the connection of the handle and inner tube assembly; FIG. 5c is a schematic cross-sectional view taken along line B-B of FIG. 5B;

fig. 6 is a schematic view of the overall structure of the conveying system according to the embodiment of the present invention;

fig. 7 is a partial enlarged view of an inner tube assembly according to an embodiment of the present invention.

In the figure:

1 handle 2 catheter Assembly 101 first housing 102 second housing

103 knob 104 screw 201 inner tube emptying tube 202 inner tube assembly

203 outer tube base 204 outer tube 205 outer tube emptying tube 206 sealing ring

1011 first avoidance groove 1012 first clamping groove 1013 first semicircle ring 1021 second avoidance groove

1022 second card slot 1023 second half-ring 1041 screw interface 2011 projection

2021 conical head 2022 fixed head 2023 internal tube 3 implant

10 handle case

Detailed Description

The invention is further described with reference to the following figures and examples.

It should be noted that the terms "inner", "outer", "upper", "lower", and the like as used herein are for illustrative purposes only and do not mean a unique embodiment. The utility model uses the far end, the near end, the axial direction and the radial direction, wherein, the far end is the side far away from the operator of the conveying system; "proximal" is the side proximal to the operator of the delivery system; "axial" refers to the axial direction of the outer tube; "radial" refers to the direction along a diameter or radius line on the cross-section of the handle.

The utility model provides a detachable handle, if the handle became invalid when the operation, the handle that can dismantle the inefficacy fast was changed, then continues to operate, does not influence the operation process. Meanwhile, the detachable handle can be detached independently for sterilization and repeated use after the operation is finished, so that the cost of the handle is shared among multiple operations, the cost of the handle in one operation is reduced, and the economic pressure of a patient is reduced.

Referring to fig. 1, the delivery system for delivering an implant according to the present embodiment includes a handle 1 and a catheter assembly 2, wherein the catheter assembly 2 is inserted into the handle 1, and the handle 1 and the catheter assembly are detachably connected, such as a threaded connection, a snap connection, a latch connection, a slot connection, and the like.

Referring to fig. 2, the handle 1 comprises a handle housing 10, a drive member for controlling the axial movement of the transmission member relative to the handle housing, and a transmission member. For ease of assembly, the handle housing 10 preferably includes a first housing 101 and a second housing 102, the first housing 101 and the second housing 102 being fixedly connected. In other embodiments, the handle housing 10 may be a whole housing, which is not limited by the present invention; if the handle shell 10 is integrated, the knob 103 is not convenient to be assembled into the handle shell 10, the knob 103 needs to be made into two parts, and the two parts of the knob 103 are assembled into a whole after being assembled into the handle shell 10; the proximal end of the handle housing 10 is provided with a first coupling member and the distal end of the transmission member is provided with a second coupling member, by means of which the handle housing 10 is detachably connected to the catheter assembly 2.

In one embodiment, the drive member is a knob 103 and the transmission member is a lead screw 104. The knob 103 is located in the middle of the handle housing 10 and is coaxially disposed with the handle housing 10, and performs a circumferential rotation motion. The screw rod 104 is coaxially arranged with the handle shell 10 and is inserted into the first shell 101, the second shell 102 and the knob 103, the inner surface of the knob 103 is provided with an internal thread matched with the screw rod 104, and the knob 103 is in threaded fit with the screw rod 104 and controls the screw rod 104 to move axially. In the present embodiment, the knob 103 and the lead screw 104 are provided for realizing a screw transmission, alternatively, other driving manners of the handle in the art can be used, for example, a rack and pinion transmission, and correspondingly, when the rack and pinion transmission is used, a corresponding appropriate component needs to be provided to replace the knob 103 and the lead screw 104, such as a gear and a corresponding rack. The embodiment adopts a pure manual handle, and in other embodiments, a pure electric handle can be adopted, for example, the knob 103 is changed into a motor drive. Therefore, the utility model provides a handle 1 is suitable for various drive structures, can set up according to actual conditions, as long as ensure that drive assembly drives outer tube 204 and be straight reciprocating motion in the axial can.

Referring to fig. 2 and 3, the first connecting part includes an avoiding groove and a locking groove, and specifically, the proximal end of the handle housing 10 is provided with at least one avoiding groove and at least one locking groove, and for convenience of operation, the number of the avoiding groove and the locking groove is preferably 2, which are respectively a first avoiding groove 1011, a second avoiding groove 1021, a first locking groove 1012 and a second locking groove 1022; the first avoidance groove 1011 and the second avoidance groove 1021 extend distally in the axial direction. When the number of the avoidance grooves is plural, it is preferable that the plural avoidance grooves are uniformly distributed in the circumferential direction. The first locking groove 1012 and the second locking groove 1022 are radially extended from the proximal end of the handle housing 10, and preferably, the first locking groove 1012 and the second locking groove 1022 are connected with the first avoiding groove 1011 and the second avoiding groove 1021 in a seamless manner, so that the protrusions on the inner tube emptying tube are prevented from being blocked when being screwed out.

Further, the first housing 101 is provided with a plurality of first semi-circular rings 1013 in the axial direction, and correspondingly, the second housing 102 is provided with a second semi-circular ring 1023 opposite to the first semi-circular ring 1013 in the axial direction, and the first semi-circular ring 1013 and the second semi-circular ring 1023 are oppositely arranged to provide a guiding function for the screw 104. Further, the two sides of the first semi-circular ring 1013 and the second semi-circular ring 1023 can be set to be hollow, so that the weight of the handle 1 can be reduced without affecting the function of the handle, and the manufacturing cost of the handle 1 can be reduced.

The distal end of the lead screw 104 is provided with the second connecting component, and in an embodiment, the second connecting component is a threaded interface, that is, the distal end of the lead screw 104 is provided with a threaded interface 1041, and is in threaded connection with the outer tube base 203 of the catheter assembly 2.

Referring to fig. 4, the catheter assembly 2 comprises, in order from the proximal end to the distal end, an inner tube evacuation tube 201, an inner tube assembly 202, an outer tube seat 203, and an outer tube 204, wherein the outer tube seat 203 is provided with an outer tube evacuation tube 205. The inner tube emptying tube 201 is detachably connected with the inner tube assembly 202, for example, in a threaded connection mode, a buckling connection mode or a clamping groove connection mode, the outer tube seat 203 is fixedly connected with the outer tube 204 and sleeved outside the inner tube assembly 202, and the outer tube emptying tube 205 is fixed on the outer tube seat 203 and used for emptying between the inner tube assembly 202 and the outer tube 204. The proximal end of the inner tube emptying tube 201 can be filled with saline for emptying the inner tube assembly 202, the proximal end of the inner tube assembly 202 has a third connecting part, in an embodiment, the third connecting part is at least one protrusion 2011 arranged outside the distal end of the inner tube emptying tube 201, in this embodiment, the number of the protrusions 2011 is preferably 2, and the first protrusions and the second protrusions are respectively and uniformly distributed in the circumferential direction of the inner tube emptying tube 201. The proximal end of the outer hub 203 is provided with a fourth connecting means by which the catheter assembly 2 is detachably connected to the handle. In one embodiment, the fourth connecting part is an internal thread disposed inside the proximal end of the outer tube holder 203, the internal thread matches with the threaded interface 1041 at the distal end of the screw rod 104, and the proximal end of the outer tube holder 203 is in threaded connection with the distal end of the screw rod 104.

Referring to fig. 5a, the distal end of the handle 1 and the catheter assembly 2 are detachably connected by threads through the threaded interface 1041 on the screw 104 and the internal threads inside the outer tube holder 203, the inner side of the outer tube holder 203 is further embedded with a sealing ring 206, and the inner side of the sealing ring 206 contacts with the outer side of the inner tube assembly 202 to ensure the sealing between the inner tube assembly 202 and the outer tube 204.

Referring to fig. 5a and 5b, the proximal end of the handle 1 and the proximal end of the catheter assembly 2 are axially and radially connected to the first locking groove 1012 and the second locking groove 1022 through the protrusion 2011 on the inner tube evacuated tube 201, and by setting the axial dimensional tolerance between the protrusion 2011 on the inner tube evacuated tube 201 and the first locking groove 1012 and the second locking groove 1022, for example, the protrusion 2011 may be set to be in small interference fit with the axial dimensions of the first locking groove 1012 and the second locking groove 1022, the interference amount is about 0 to 0.1mm, and it is ensured that the protrusion 2011 can perform circumferential movement only when a certain torque is applied. The protrusion 2011 needs to be applied with a certain torque to perform circumferential movement, so that the inner tube emptying tube 201 and the inner tube assembly 202 are not easy to move circumferentially. In this embodiment, the connection can be dismantled through the mode that the draw-in groove is connected to the near-end of handle 1 and catheter subassembly 2, in other embodiments, also can adopt modes such as buckle connection, bolt connection, threaded connection to realize dismantling the connection between the near-end of handle 1 and catheter subassembly 2, as long as can realize inner tube subassembly 202 axial and circumference fixed connection mode dismantled all can, the utility model discloses do not specially limit this.

In this embodiment, the number of the avoiding grooves and the clamping grooves is preferably 2, and the number of the protrusions 2011 is also preferably 2; in other embodiments, the sum of the numbers of the first avoiding groove 1011 and the second avoiding groove 1021 may be N times that of the protrusion 2011, where N is a positive integer, and the angle of the avoiding groove in the circumferential direction matches the angle of the protrusion 2011 in the circumferential direction. In order to facilitate the assembling operation and the uniform stress, the sum of the numbers of the first avoidance groove 1011 and the second avoidance groove 1021 is preferably equal to the number of the protrusions 2011. The axial cross-sectional dimension of protrusion 2011 is slightly less than the cross-sectional dimension of first dodging groove 1011 and second dodging groove 1021, and it is guaranteed that protrusion 2011 can normally dodge groove 1011 and second dodging groove 1021 through first. In this embodiment, the number of avoiding the groove, the slot, and the protrusion 2011 is 2 as an example, the first avoiding groove 1011 and the second avoiding groove 1021 are circumferentially distributed at 180 degrees, the first slot 1012 and the second slot 1022 are circumferentially distributed at 180 degrees, and the two protrusions 2011 are circumferentially distributed at 180 degrees, and further, in an assembled state, the first avoiding groove 1011, the second avoiding groove 1021, the first slot 1012 and the second slot 1022 are circumferentially distributed at 90 degrees. Of course, in other embodiments, there may be other angles between the first avoiding groove 1011 and the second avoiding groove 1021 and between the first locking groove 1012 and the second locking groove 1022, but it is only necessary to ensure that the distribution angles of the avoiding groove and the locking groove in the circumferential direction are consistent with the distribution angles of the protrusions 2011 in the circumferential direction, and it is only necessary to ensure that the protrusions 2011 can be matched with the locking grooves after rotating through the avoiding groove.

When the handle 1 and the catheter assembly 2 are required to be connected, the knob 103 is rotated first, the screw rod 104 moves towards the near end, the inner tube emptying tube 201 of the catheter assembly 2 is detached, then the near end of the remaining catheter assembly 2 is inserted from the far end of the handle 1, then the outer tube base 203 is in threaded connection with the threaded interface 1041 of the screw rod 104, then the inner tube emptying tube 201 is connected with the near end of the inner tube assembly 202, meanwhile, the protrusion 2011 on the inner tube emptying tube 201 penetrates through the first avoiding groove 1011 and the second avoiding groove 1021, and finally, the inner tube emptying tube 201 is rotated by about 90 degrees, so that the protrusion 2011 on the inner tube emptying tube 201 is matched with the first clamping groove 1012/second clamping groove 1022, and the inner tube emptying tube 201 is ensured not to be axially removed from the first clamping groove 1012/second clamping groove 1022. The structures of the first avoidance groove 1011 and the second avoidance groove 1021 and the first locking groove 1012 and the second locking groove 1022 which are distributed at 90 degrees in the circumferential direction are relatively simple, and at this time, the number of the protrusions 2011 is equal to the number of the avoidance grooves. In other embodiments, the inner tube emptying tube 201 may be rotated by about 45 degrees, so that the number of the grooves is 2 times of the number of the protrusions 2011, and at this time, the number of the clamping grooves is not particularly limited, and may be 2 or 4.

When the handle 1 and the duct assembly 2 need to be detached, the knob 103 is rotated first to move the screw rod 104 to the near end, then the inner tube emptying tube 201 is rotated by about 90 degrees, the protrusion 2011 on the inner tube emptying tube 201 can be disengaged from the first avoidance groove 1011 and the second avoidance groove 1021, then the inner tube emptying tube 201 is disengaged from the inner tube assembly 202, the outer tube base 203 is disengaged from the threaded interface 1041 of the screw rod 104, and finally the remaining duct assembly 2 is pulled out from the handle 1.

Referring to fig. 6, 7 and 4, the delivery system, which is used to deliver the implant 3, comprises a handle 1 and a catheter assembly 2. The distal end of the catheter assembly 2 includes an outer tube 204 and an inner tube assembly 202, with the outer tube 204 being disposed over the inner tube assembly 202. As shown in fig. 7, the inner tube assembly 202 comprises, from the proximal end to the distal end, an inner tube 2023, a fixed head 2022 and a conical head 2021 connected in sequence. The proximal end of the inner tube 2023 on the inner tube assembly 202 is fixedly connected to the inner tube evacuated tube 201, and then the inner tube evacuated tube 201 is engaged with the first engaging groove 1012 of the first housing 101 and the second engaging groove 1022 on the second housing 102 by the protrusion 2011 disposed on the inner tube evacuated tube 201; the five degrees of freedom of the fixation head 2022 are all limited for the fixation of the supporting implant 3. Loading, release and retrieval of the implant 3 is accomplished by driving the outer tube 204 axially, which moves the outer tube 204 proximally or distally relative to the inner tube assembly 202.

If the faulty handle is to be replaced, two operations of disassembly and reassembly need to be performed. For detachment, the knob 103 is rotated to move the screw rod 104 towards the proximal end to ensure that an axial gap is formed between the tapered head 2021 and the outer tube 204, then the inner tube emptying tube 201 is rotated by about 90 degrees to enable the protrusions 2011 on the inner tube emptying tube 201 to be disengaged from the first avoidance groove 1011 and the second avoidance groove 1021, then the inner tube emptying tube 201 is disengaged from the inner tube assembly 202, the outer tube base 203 is disengaged from the threaded interface 1041 of the screw rod 104, and finally the remaining catheter assembly 2 is pulled out from the handle 1. For reassembly, the same method is adopted to ensure that an axial gap is formed between the conical head 2021 and the outer tube 204, then the inner tube emptying tube 201 of the catheter assembly 2 is removed, then the proximal end of the remaining catheter assembly 2 is inserted from the distal end of the handle 1, then the outer tube base 203 is connected with the threaded interface 1041 of the screw 104 through threads, then the inner tube emptying tube 201 is connected with the proximal end of the inner tube assembly 202, and meanwhile, the protrusion 2011 on the inner tube emptying tube 201 passes through the first avoiding groove 1011 and the second avoiding groove 1021, as shown in fig. 5 b; finally, the inner tube emptying tube 201 is rotated by about 90 degrees, so that the protrusion 2011 on the inner tube emptying tube 201 is matched with the first clamping groove 1012 and the second clamping groove 1022, and the inner tube emptying tube 201 is prevented from axially disengaging from the first clamping groove 1012 and the second clamping groove 1022.

If the handle is to be reused to reduce the cost of each operation, after the operation is completed, the handle 1 is separated from the catheter assembly 2, the catheter assembly 2 is disposed of as waste, and the handle 1 is removed for sterilization and reuse with a new catheter assembly 2.

Meanwhile, when the catheter assembly 2 is withdrawn from the body after the operation, the inner tube emptying tube 201 can be rotated by about 90 degrees, so that the protrusion 2011 on the inner tube emptying tube 201 can be separated from the first avoiding groove 1011 and the second avoiding groove 1021, no axial gap is formed between the conical head 2021 and the outer tube 204, and the injury to the tissues when the catheter assembly 2 is withdrawn from the body is avoided.

To sum up, the utility model provides a handle and conveying system for implant has following advantage at least:

1) the handle 1 and the catheter assembly 2 can be assembled and disassembled quickly, and particularly, the handle 1 and the catheter assembly 2 can be detachably connected through a clamping groove on the proximal end of the handle shell 10 and a protrusion 2011 on the inner tube emptying tube 201; furthermore, the limitation of 6 degrees of freedom of the handle can be realized through the forms of threaded connection, buckling connection, bolt connection and the like, so that the overall stability of the handle is more favorably kept. The handle 1 and the catheter assembly 2 are detachably connected, so that the safety risk of handle 1 failure can be quickly responded, and the problem of the handle is avoided from being changed from interventional operation to surgical operation to cause more trauma to a patient; on the other hand, the handle 1 can be reused, so that the cost of each operation can be reduced, and the economic pressure of a patient is reduced.

2) The catheter assembly in the interventional implant handle can be in direct contact with blood or other tissue fluid of an organism in use, an emptying pipe needs to be arranged, the emptying pipe of the existing handle is arranged in the handle body assembly, and if the catheter assembly is detached from the handle, the blood or other tissue fluid in the emptying pipe can pollute the handle and cannot be used for the second time. Compared with the prior art, the utility model provides an evacuation pipe is in duct subassembly 2 rather than being in handle 1, need not consider when dismantling the liquid in the evacuation pipe and flow to handle 1 in, handle 1 can reuse safely.

3) In the present invention, inner tube assembly 202 is located at the proximal end of catheter assembly 2, facilitating the rapid retraction of inner tube assembly 202. The proximal end of the catheter assembly 2, i.e. the proximal end of the inner tube assembly 202, can be detached from the inner tube evacuation tube 201, and can also be quickly retracted, because the inner tube assembly 202 is directly rotated and pulled out during operation, similar to the detachment step, rather than being retracted by slow movement of the lead screw 104; when the clamping groove at the proximal end of the catheter component 2 is detached for connection, the inner tube emptying tube 201 retreats to drive the inner tube 2023, the fixing head 2022 and the conical head 2021 to be integrally retreated, so that the conical head 2021 and the outer tube 204 are closed, no axial gap exists between the conical head 2021 and the outer tube 204 after the implant is released, and the tissue is prevented from being damaged when the instrument is withdrawn from the body.

4) The catheter assembly 2 is inserted into the handle 1, but the catheter assembly 2 and the handle 1 are not arranged in different cavities, so that the section size of the handle 1 can be reduced, and the handle 1 becomes light and small and is convenient to operate.

5) The handle 1, whether electric, manual or electric-manual hybrid, can be made detachable from the catheter assembly 2, with a wide range of applications.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (14)

1. A handle for delivering an implant, comprising a handle housing, a drive member, and a transmission member;

the proximal end of the handle shell is provided with a first connecting part;

the driving part is used for controlling the transmission part to move axially relative to the handle shell, a second connecting part is arranged at the far end of the transmission part, and the handle is detachably connected with the catheter assembly through the first connecting part and the second connecting part.

2. The handle of claim 1, wherein the first connecting member includes an axially extending relief groove and a radially extending catch groove, the relief groove and the catch groove being circumferentially offset.

3. The handle according to claim 2, wherein the number of the avoiding grooves is plural, and the plural avoiding grooves are uniformly distributed in a circumferential direction.

4. The handle of claim 1, wherein the driving member comprises a knob, the transmission member comprises a lead screw, the knob is circumferentially disposed on the handle housing, the lead screw is disposed in the handle housing, the knob, the lead screw and the handle housing are coaxially disposed, and the knob and the lead screw are in threaded engagement.

5. The handle of claim 4, wherein the second coupling member is disposed at a distal end of the lead screw, the second coupling member being a threaded interface.

6. A catheter assembly for delivering an implant, the catheter assembly comprising an inner tube assembly, an outer tube, and an outer tube hub, the inner tube assembly comprising an inner tube;

the proximal end of the inner tube assembly is provided with a third connecting part;

the inner pipe penetrates through the outer pipe seat and is arranged in the outer pipe, the outer pipe seat is movably sleeved outside the inner pipe, the far end of the outer pipe seat is fixedly connected with the near end of the outer pipe, a fourth connecting part is arranged at the near end of the outer pipe seat, and the catheter assembly is detachably connected with the handle through the third connecting part and the fourth connecting part.

7. The catheter assembly as set forth in claim 6, wherein an inner tube emptying tube is detachably connected to a proximal end of the inner tube, and the third connecting member is provided outside a distal end of the inner tube emptying tube, and the third connecting member is a protrusion.

8. The catheter assembly of claim 7, wherein the removable connection between the inner tube and the inner tube evacuated tube is a threaded connection, a snap connection, or a bayonet connection.

9. The catheter assembly of claim 6, wherein the fourth connecting member is an internal thread disposed inside the proximal end of the outer hub.

10. The catheter assembly of claim 6, wherein the inner side of the outer tube base is embedded with a sealing ring, and the inner side of the sealing ring is in contact with the outer side of the inner tube assembly.

11. A delivery system for delivering an implant, comprising a handle according to any one of claims 1 to 5 and a catheter assembly according to any one of claims 6 to 10;

the first connecting part is matched with the third connecting part and is detachably connected with the third connecting part;

the second connecting part is matched with the fourth connecting part and is detachably connected with the fourth connecting part.

12. The conveying system according to claim 11, wherein an avoiding groove and a clamping groove are formed in the proximal end of the handle shell, an inner tube emptying tube is detachably connected to the proximal end of the inner tube, a protrusion is arranged on the outer side of the distal end of the inner tube emptying tube, the protrusion can penetrate through the avoiding groove and is clamped in the clamping groove after rotating for a preset angle.

13. The delivery system of claim 11, wherein the transmission member comprises a lead screw having a threaded interface at a distal end thereof and an internal thread mating with the threaded interface at a proximal end thereof, the lead screw having a distal end thereof threadedly coupled to the proximal end of the outer hub.

14. The delivery system according to claim 12, wherein a first protrusion and a second protrusion are disposed outside a distal end of the inner tube emptying tube, a first avoidance groove, a second avoidance groove, a first clamping groove and a second clamping groove are disposed at a proximal end of the handle housing, the first protrusion and the second protrusion are circumferentially distributed at 180 degrees, the first avoidance groove and the second avoidance groove are circumferentially distributed at 180 degrees, the first clamping groove and the second clamping groove are circumferentially distributed at 180 degrees, and the first clamping groove, the first avoidance groove, the second clamping groove and the second avoidance groove are circumferentially distributed at 90 degrees in sequence.

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