CN211985521U - 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 device and a transmission component; the handle shell is provided with a first hollowed-out slot, and the handle shell is provided with a first clamping part along a first direction; the driving device is connected with the transmission component and controls the transmission component to move; the transmission part is arranged in the handle shell and comprises a driving block, and the driving block moves towards the near end or the far end of the handle in the first slot under the control of the driving device. The utility model discloses this characteristics of axial relative displacement can take place for ingenious utilization outer tube subassembly, inner tube subassembly, realized taking place after displacement on the first direction at handle and tubing assembly, can dismantle both, the connection is simply saved time. 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 device and a transmission member; the handle shell is provided with a first hollowed-out slot, and the handle shell is provided with a first clamping part along a first direction; the driving device is connected with the transmission component and controls the transmission component to move; the transmission part is arranged in the handle shell and comprises a driving block, and the driving block moves towards the near end or the far end of the handle in the first slot under the control of the driving device.

Preferably, the first clamping part comprises a first clamping groove and a first clamping strip, and the first clamping strip protrudes along the second direction and is arranged in the first clamping groove.

Preferably, the first slot extends in a first direction to form a first guide rail.

Preferably, the first clamping part comprises a third protruding part and a fourth protruding part which are connected, the third protruding part extends along the first direction, the fourth protruding part extends along the third direction, a second opening is formed between the third protruding part and the fourth protruding part and the edge of the handle shell, and the second opening faces the far end of the handle.

Preferably, a fastening member is provided to a side of the handle housing.

Preferably, the fastening member is a threaded knob, the threaded knob includes a threaded portion and a knob portion, the knob portion is disposed on the outer side of the distal end of the handle housing and extends out of the edge of the handle housing along a third direction, and the threaded portion passes through the handle housing and is in threaded connection with a fixing member disposed in the handle housing.

Preferably, the driving device comprises a switch, a power supply, a control panel and a motor, wherein the switch is connected with the power supply, the power supply is connected with the control panel, the control panel is connected with the motor, the motor is provided with an output end, and the control panel controls the output end of the motor to rotate.

Preferably, the transmission part includes lead screw and shaft coupling, the lead screw with the coaxial setting of output of motor, the one end of shaft coupling with the output fixed connection of motor, the other end of shaft coupling with the one end fixed connection of lead screw, the accordant connection has fixed part on the lead screw, the drive block is fixed on the fixed part.

Preferably, drive arrangement includes manual rotation and gear shaft, transmission part includes gear wheel and pinion, manual rotation spare includes fixed connection's manual control unit and rotation axis, manual control unit sets up the near-end outside of handle casing, the rotation axis passes handle casing with the gear shaft is coaxial and with gear shaft fixed connection, the gear shaft with gear wheel is coaxial and fixed connection, the gear wheel with the pinion meshing is connected, the pinion with the lead screw is coaxial and with the other end fixed connection of lead screw.

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 a catheter assembly housing, an inner tube, an outer tube, and an outer tube holder; the catheter component shell is provided with a hollow second open slot, and a second clamping part is arranged on the catheter component shell along a first direction; the inner tube penetrates through the outer tube seat and is arranged in the outer tube, the outer tube seat is movably sleeved outside the inner tube and moves towards the near end or the far end of the catheter component in the second groove, and the far end of the outer tube seat is fixedly connected with the near end of the outer tube.

Preferably, the second snap-in part comprises a first protruding part and a second protruding part which are connected, the first protruding part extends along the first direction, the second protruding part extends along the third direction, a first opening is formed among the first protruding part, the second protruding part and the edge of the catheter assembly shell, and the first opening faces the proximal end of the catheter assembly.

Preferably, the second clamping part comprises a second clamping groove and a second clamping strip, and the second clamping strip protrudes along the second direction and is arranged in the second clamping groove.

Preferably, the second slot extends in the first direction to form a second rail.

Another technical solution adopted by the present invention to solve the above technical problems is to provide a conveying system for conveying an implant, comprising the above handle and the above catheter assembly, wherein the second open groove matches with the position and shape of the first open groove on the handle housing, the position and shape of the first clamping member matches with the position and shape of the second clamping member, and the handle and the catheter assembly are detachably connected in a first direction through the first clamping member and the second clamping member; the outer tube seat is fixedly connected with the driving block in the axial direction and detachably connected in the third direction.

Preferably, the driving block is provided with a driving block slot, the outer tube seat is provided with an outer tube seat slot, and the driving block slot is embedded into the outer tube seat slot in a matching manner.

Preferably, the first clamping part comprises a first clamping groove and a first clamping strip, and the first clamping strip protrudes along the second direction and is arranged in the first clamping groove; the second clamping part comprises a first protruding part and a second protruding part which are connected, a first opening is formed between the first protruding part and the edge of the catheter component shell, and the first opening faces to the near end of the catheter component and is clamped on the first clamping strip.

Preferably, a threaded knob is arranged on the side surface of the handle shell, the threaded knob comprises a threaded portion and a knob portion, the knob portion is arranged on the outer side of the far end of the handle shell, and the end face of the proximal end of the knob member extends out of the edge of the handle shell along a third direction to abut against the outer side of the far end of the catheter assembly shell.

The utility model discloses contrast prior art has following beneficial effect: the utility model provides a handle, tubing assembly and conveying system for carrying implant adopts the detachable connected mode between handle and the tubing assembly, the utility model discloses utilize outer tube subassembly, this characteristics of axial relative displacement can take place for the inner tube subassembly ingeniously, combine the drive block and outer tube subassembly or the detachable connection of inner tube subassembly in the third direction, realized taking place after the displacement on the first direction at handle and tubing assembly, can dismantle both, the connection process is simply saved time. 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 and the catheter component are designed in a split mode, so that the handle can be reused, the cost of each operation is reduced, and the economic pressure of a patient is reduced. The catheter assembly and the handle are each integrated independently such that the handle operation and the emptying operation of the catheter assembly do not interfere with each other.

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 internal structure of the conveying system according to the embodiment of the present invention

FIG. 3 is a schematic view of the internal structure of the handle according to the embodiment of the present invention;

fig. 4 is a schematic view of the internal structure of a catheter assembly in an embodiment of the invention;

FIG. 5 is a partial schematic view of a handle housing according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a driving block in an embodiment of the present invention;

fig. 7 is a schematic view of the overall structure of the conveying system according to the embodiment of the present invention;

fig. 8 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 control board 104 switch 105 power supply 106 fastening parts

107 motor 108 coupling 109 screw rod 110 driving block

111 pinion 112 bull gear 113 Manual rotation 114 gear shaft

115 first slot 116 control key 117 fixing piece 118 first clamping part

201 third housing 202 fourth housing 203 Steady tube 204 Steady tube

205 outer tube 206 inner tube assembly 207 stabilizing tube dump tube 208 outer tube dump tube

209 outer tube base 210 inner tube evacuated tube 211 second slot 1021 first card strip

1022 third card strip 1023 first card slot 1024 first guide rail 1101 drive block slot

1061 knob 1062 screw 1071 output

2011 second snap feature 2011a first projection 2011b second projection 2011c first opening

2061 taper head 2062 fixed head 2063 inner tube 2091 outer tube seat slot

3 implant 10 handle housing 20 catheter Assembly housing

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, the first direction, the second direction and the third 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, i.e., "first direction"; "second direction" refers to a direction perpendicular to the axis of the outer tube in a horizontal plane; the "third direction" refers to a direction perpendicular to the axis of the outer tube in the vertical plane.

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 present embodiment provides a delivery system for delivering an implant, which includes a handle 1 and a catheter assembly 2, wherein the catheter assembly 2 is disposed outside the handle 1, and is detachably connected to the handle 1. To facilitate assembly, it is preferable that the handle 1 includes a first housing 101 and a second housing 102, the first housing 101 and the second housing 102 are fixedly connected, and the catheter assembly 2 includes a third housing 201 and a fourth housing 202, and the third housing 201 and the fourth housing 202 are fixedly connected.

Referring to fig. 2, 3 and 5, the handle 1 comprises a handle housing 10, a drive means and a transmission member. The handle housing 10 includes a first housing 101 and a second housing 102, and in other embodiments, the handle housing 10 may be a whole housing, which is not limited by the present invention; the bottom of the handle housing 10 is provided with a first hollow groove 115, the handle housing 10 is provided with a first clamping part 118, and the handle housing 10 is detachably connected with the catheter assembly 2 through the first clamping part 118 and the fastening part 106.

The driving device is arranged inside and outside the handle shell 10, and the handle 1 can be a pure electric handle or a pure manual handle or a mixed electric and manual handle. In one embodiment, the driving means includes both an electric driving means including a switch 104, a power source 105, a control board 103 and a motor 107, and a manual driving means including a manual rotation member 113 and a gear shaft 114.

The transmission component comprises a coupler 108 and a lead screw 109.

Specifically, the switch 104 is electrically connected to the power supply 105, the power supply 105 is electrically connected to the control board 103, and the control board 103 is electrically connected to the motor 107. A power source 105 and a motor 107 are located inside the handle housing 10, the power source 105 providing a power source for the handle 1. For convenience of operation, a part of the switch 104 is embedded in the handle housing 10, another part is exposed out of the handle housing 10, and an operation key is arranged on the exposed part and used for controlling the on-off of a circuit between the power supply 105 and the motor 107. Similar to the switch 104, a portion of the control board 103 is embedded in the handle housing 10, another portion is exposed out of the handle housing 10, and the exposed portion is provided with a control key 116, and the control key 116 is used for controlling the operation state of the motor 107, including starting, advancing, retreating, stopping, and the like. The end of the motor 107 has an output end 1071, the output end 1071 of the motor 107 and the lead screw 109 are coaxially arranged, the lead screw 109 is directly connected with the output end 1071 of the motor 107 through a coupler 108, specifically, one end of the coupler 108 is fixedly connected with the output end 1071 of the motor 107, and the other end of the coupler 108 is fixedly connected with the far end of the lead screw 109. In this configuration, the rotational movement of the output end 1071 of the motor 107 directly drives the rotational movement of the lead screw 109, so that the driving block 110 fixed to the nut performs a linear movement in the first slot 115. The manual rotating element 113 comprises a manual control part 1121 and a rotating shaft 1122 which are fixedly connected, for facilitating manual operation, the manual rotating element 113 is arranged at the proximal end of the handle housing 10, the manual control part 1121 is arranged at the outer side of the proximal end of the handle housing 10, the rotating shaft 1122 penetrates through the handle housing 10 and is coaxially arranged and fixedly connected with the gear shaft 114, the gear shaft 114 is coaxially arranged and circumferentially fixedly connected with the gearwheel 112, the gearwheel 112 is meshed with the pinion 111, and the pinion 111 is coaxially arranged with the screw rod 109 and is fixedly connected with the proximal end of the screw rod 109. In this embodiment, the output end 1071 of the motor 107 and the lead screw 109 are coaxially arranged, and transmission by meshing of a large gear and a small gear is not required, so that parts can be simplified.

In the motor mode, the screw 109 is driven by the rotation of the output end 1071 of the motor 107, so that the driving block 110 fixed to the nut performs a linear motion. In the manual mode, the rotation of the manual rotating member 113 drives the large gear 112 to rotate, and then the small gear 111 is driven to rotate through gear engagement, so as to drive the screw rod 109 to rotate, so that the driving block 110 fixed on the nut performs linear motion. The electric mode and the manual mode are arranged in a mixed mode, a double-insurance effect can be achieved, the other mode is used for replacing the handle under the condition that one mode fails, and the handle can continue to work, so that the failure probability of the handle is reduced.

In one other embodiment, the handle drive mode may be a purely electric mode or a purely manual mode. The following components can be removed from the pure electric handle: a manual rotating member 113, a gear shaft 114, a large gear 112, and a small gear 111; the following parts can be removed from the purely manual handle: switch 104, power supply 105, control board 103, motor 107, and coupling 108.

In another embodiment, the motor is a linear motor and has a motor shaft (not shown), the driving block is fixed on the motor shaft, and the motor shaft makes a linear reciprocating motion along the axial direction under the control of the control board 103, so as to drive the driving block to make a linear motion. Therefore, the utility model provides a handle is suitable for various drive structures, can set up according to actual conditions, as long as ensure that drive block 110 can be at axial straight reciprocating motion can.

Referring to fig. 1 and 4, the catheter assembly 2 is located outside the handle 1, and includes a catheter assembly housing 20, an outer tube 205, an inner tube assembly 206, an outer tube evacuation tube 208, an outer tube seat 209, and an inner tube evacuation tube 210; further, catheter assembly 2 also includes a stabilization tube socket 203 and a stabilization tube 204. For convenience of assembly, the catheter assembly housing 20 includes a third housing 201 and a fourth housing 202, a second snap-in part 2011 is disposed on the catheter assembly housing 20, and the second snap-in part 2011 and the first snap-in part 118 are detachably connected in the first direction, so that the handle 1 and the catheter assembly 2 can be quickly assembled and disassembled. The top surface of the duct assembly housing 20 is provided with a second slot 211 that is hollowed out, and the second slot 211 matches the first slot 115 in position and shape. The first slot 115 and the second slot 211 correspondingly disposed on the handle housing 10 and the catheter assembly housing 20 not only achieve the detachable connection between the driving block 110 and the outer tube holder 209, but also provide a moving space required for driving the outer tube holder 209 to move linearly when the driving block 110 moves linearly, i.e. driving the outer tube holder 209 to move toward the proximal end or the distal end of the catheter assembly 2 in the second slot 211.

Referring to fig. 2, 4 and 6, the driving block 110 is fixedly and detachably connected to the outer tube base 209, in an embodiment, a driving block slot 1101 is formed in the bottom of the driving block 110, an outer tube base slot 2091 is formed in the outer tube base 209, and the driving block slot 1101 and the outer tube base slot 2091 are matched with each other, so that the driving block 110 can be nested on the outer tube base 209 for insertion. Specifically, the outer tube seat slot 2091 is slotted along the second direction, the outer tube seat slot 2091 has limiting parts on two sides in the axial direction, the driving block 110 is limited by the limiting parts on two sides in the axial direction to move relative to the outer tube seat 209 in the axial direction, so that the driving block 110 and the outer tube seat 209 can keep relatively static in the axial direction, correspondingly, the driving block slot 1101 is slotted along the axial direction, the driving block slot 1101 has limiting parts on two sides in the second direction, the limiting parts on two sides limit the relative movement of the driving block 110 in the second direction, so that the driving block 110 and the outer tube seat 209 are stably and fixedly connected in the horizontal plane, and further the outer tube seat 209 is driven by the linear reciprocating movement of the driving block 110 to perform linear reciprocating movement, and finally the outer tube 205 fixedly connected with the outer tube seat 209 performs linear reciprocating movement. Meanwhile, in the third direction, the driving block 110 is detachable from the outer tube base 209. The connection mode between the driving block 110 and the outer tube seat 209 is not particularly limited in the present invention, as long as the driving block 110 and the catheter assembly 2 can be detachably connected in the third direction, such as other concave-convex shape matching connection or pin connection.

Referring to fig. 4, 7 and 8, the inner tube assembly 206 comprises, in order from the proximal end to the distal end, an inner tube 2063, a fixation head 2062 and a tapered head 2061 connected in series. Further, an inner tube exhaust tube 210 is disposed at the proximal end of the inner tube 2063, the proximal end of the inner tube exhaust tube 210 is disposed outside the catheter assembly housing 20, the proximal end of the inner tube 2063 is fixed at the proximal end of the catheter assembly housing 20 through a fixing member after being connected to the distal end of the inner tube exhaust tube 210, and the air in the inner tube 2063 can be evacuated by injecting liquid into the inner tube exhaust tube 210 during the operation. The inner tube 2063 penetrates through the outer tube base 209 and is arranged in the outer tube, the distal end of the outer tube base 209 is fixedly connected with the outer tube 205, the outer tube base 209 and the outer tube 205 are kept relatively static in the axial direction, and the outer tube base 209 drives the outer tube 205 to move together when moving in the axial direction; the outer tube base 209 is further provided with an outer tube evacuation tube 208 communicated with the outer tube 205, the outer tube evacuation tube 208 extends out and is exposed out of the catheter assembly housing 20, air between the outer tube 205 and the inner tube 2063 can be evacuated when liquid is injected into the outer tube evacuation tube 208 in the operation process, and the outer tube base 209, the outer tube 205 and the outer tube evacuation tube 208 are fixedly connected and can linearly move along the axial direction.

In a preferred embodiment, the outer tube 205 is further sleeved with a stabilization tube seat 203 and a stabilization tube 204, the stabilization tube seat 203 is fixed on the distal end of the catheter assembly housing 20, preferably, the distal end of the stabilization tube seat 203 is hermetically connected with the proximal end of the stabilization tube 204, the distal end of the outer tube 205 penetrates through the stabilization tube seat 203 and the stabilization tube 204, and the stabilization tube 204 is sleeved outside the outer tube 205 and covers a portion of the outer tube 205. The outer tube 205 is linearly movable in the axial direction along the outside of the inner tube assembly 206 and the inside of the stabilizer tube 204 and the stabilizer tube seat 203. Further, a stabilizer tube emptying tube 207 is hermetically connected to the stabilizer tube 204, the stabilizer tube emptying tube 207 extends out and is exposed from the catheter assembly housing 20, and liquid is injected into the stabilizer tube emptying tube 207 to evacuate air between the outer tube 205 and the stabilizer tube 204 during the operation. The stabilizing tube 204 supports the outer tube 205 through the stabilizing tube seat 203, provides a force point for a long catheter delivery system, provides a force point for the movement of the outer tube 205 in a complex blood vessel of a human body in a surgical process, and prevents the outer tube 205 from rubbing against the blood vessel. In other embodiments, when outer tube 205 has sufficient strength, the components of stabilizer tube 204, stabilizer tube evacuation tube 207, and stabilizer tube base 203 may be eliminated, and the inner tube assembly structure may be further simplified.

Referring to fig. 1, 2 and 5, the detachable connection between the first snap-in component 118 on the handle housing 10 and the second snap-in component 2011 on the catheter assembly housing 20 is a snap-in connection, the first snap-in component 118 is disposed at the bottom edge of the handle housing 10, the second snap-in component 2011 is disposed at the top edge of the catheter assembly housing 20, the number of the first snap-in component 118 and the second snap-in component 2011 is at least 2, preferably 4 or 6, specifically determined according to the lengths of the handle 1 and the catheter assembly 2 in the first direction, if the lengths of the handle housing 10 and the catheter assembly housing 20 in the first direction are smaller, four first snap-in components 118 and four second snap-in components 2011 may be preferably provided; if the handle housing 10 and the catheter assembly housing 20 are of a greater length in the first direction, six first snap features 118 and six second snap features 2011 may be preferred; further, the plurality of first snap members 118 are uniformly distributed along the first direction at the bottom edge of the handle housing 10, and the plurality of second snap members 2011 are uniformly distributed along the first direction at the top edge of the catheter assembly housing 20. In an embodiment, the second snap-in part 2011 includes a first protrusion 2011a and a second protrusion 2011b connected to each other, the first protrusion 2011a extends along the first direction, the second protrusion 2011b extends along the third direction, a first opening 2011c is formed between the first protrusion 2011a and the second protrusion 2011b and the edge of the catheter assembly housing 20, and the first opening 2011c faces the proximal end of the catheter assembly 2, which has an advantage that the catheter assembly 2 can be detached from the handle 1 even when the distal end of the outer tube and the distal end (tapered head) of the inner tube are closed, and if the first opening 2011c faces the distal end, in this case, the inner tube assembly 206 cannot be retracted and cannot be detached. The first card member 118 includes a first card strip 1021 or a third card strip 1022 and a first card slot 1023, the first card strip 1021 or the third card strip 1022 protrudes along the second direction and is disposed in the first card slot 1023, the first card strip 1021 is disposed at the proximal end of the handle housing 10, preferably, the first card slot 1023 extends along the first direction to form a first guide rail 1024, and the second connecting member 2011 can slide along the first guide rail 1024 in the first direction to facilitate the first opening 2011c to be snapped on the card strip 1021; further, the plurality of first card slots 1023 extend to form the continuous first guide rail 1024, which is more convenient for processing. Preferably, the first protrusion 2011a and the second protrusion 2011b on the top edge of the catheter assembly housing 20 are snapped into the first snap 1023 of the handle housing 10, and the first opening 2011c of the second connecting part 2011 is snapped onto the first snap strip 1021 or the third snap strip 1022, so that the catheter assembly 2 can slide along the first guide rail 1024 in the first direction relative to the handle 1, and the catheter assembly 2 is restricted from moving in the third direction. The length of the first opening 2011c in the axial direction should be smaller than the length of the inner tube and the outer tube that can be relatively displaced, so as to satisfy the smaller relative movement between the inner tube and the outer tube, and further protect the delivery system or the stent clamped therein.

With continued reference to fig. 2 and 3, in order to fix the handle 1 and the catheter assembly 2 in the first direction, in an embodiment, a fastening member 106 is disposed on a distal side surface of the handle housing 10, the fastening member 106 is preferably a threaded knob, and includes a threaded portion 1062 and a knob portion 1061, the knob portion 1061 is disposed on an outer side of the handle housing 10, the threaded portion 1062 penetrates the handle housing 10 to be threadedly coupled with a fixing member 117 disposed in the handle housing 10, and a proximal end surface of the knob portion 1061 abuts against a distal end surface of the catheter assembly housing 20 to horizontally fix the catheter assembly 2 relative to the handle 1. In other embodiments, the threaded connection of the threaded knob may be replaced with a bayonet or snap connection to achieve relative fixation of the handle housing 10 and the catheter assembly housing 20 in the first direction.

In this embodiment, the handle 1 and the catheter assembly 2 are limited to slide relative to each other in the first direction and be fixed in the third direction by the way of the connection between the first snap-in component 118 and the second snap-in component 2011, so that the handle 1 and the catheter assembly 2 are detachably connected in the first direction. The protruding shape of second joint part 2011, the draw-in groove shape of second joint part 2011, the shape of guide rail, the mode, the quantity that the three set up the utility model discloses all do not do the restriction, technical field personnel can set up according to the demand, as long as can realize both can dismantle on the first direction connect can.

Referring to fig. 4 and 6, when the handle 1 is connected to the catheter assembly 2, the axial position of the outer tube holder 209 on the inner tube assembly 206 is adjusted, so that the outer tube holder slot 2091 on the outer tube holder 209 is slightly biased to the proximal end of the handle 1 relative to the driving block slot 1101 on the driving block 110, then the driving block slot 1101 catches the outer tube holder slot 2091, and the upper surface of the catheter assembly housing 20 is tightly attached to the lower surface of the handle housing 10, so as to ensure that there is no relative displacement in the linear movement direction of the driving block 110 after the outer tube holder 209 is connected to the driving block 110, thereby converting the linear movement of the driving block 110 into the linear movement of the outer tube holder 209 and the outer tube 205, then the catheter assembly 2 is slid to the bottom towards the proximal end of the handle 1, the first opening 2011c of the second catching member is caught on the first catching bar 1021 or the third catching bar 1022, at this time, the outer tube holder 209 and the outer, finally, the fastening member 106 (threaded knob) on the handle 1 is tightened so that its proximal end face abuts against the distal end face of the catheter assembly housing 20 to achieve fixation of the catheter assembly 2 in the first direction relative to the handle 1.

When the handle 1 is detached from the catheter assembly 2, the fastening member 106 is unscrewed to the detachment position, the catheter assembly 2 is slid towards the distal end relative to the handle 1, at this time, the outer tube holder 209 and the outer tube 205 move towards the proximal end of the catheter assembly 2 relative to the inner tube 2063, the first snap-in member 118 and the second snap-in member 2011 are separated, then the catheter assembly housing 20 and the handle housing 10 can be separated in the third direction, and simultaneously the driving block slot 1101 and the outer tube holder slot 2091 are separated in the third direction.

In another embodiment, the structure of the first snap part 118 and the structure of the second snap part 2011 may be interchanged by those skilled in the art, that is, the first snap part 118 includes a third protrusion and a fourth protrusion connected with each other, the third protrusion extends along the first direction, the fourth protrusion extends along the third direction, and a second opening is formed between the third protrusion, the fourth protrusion and the bottom edge of the handle housing, preferably, the second opening faces the distal end of the handle 1; the second clamping part 2011 includes a second clamping groove and a second clamping strip, the second clamping strip is protruded and arranged in the second clamping groove along the second direction, and further, the second clamping groove extends along the first direction to form a second guide rail. Accordingly, a fastening member, such as a threaded knob, is provided on the proximal side of the catheter assembly housing 20, the end face of which abuts against the proximal end face of the handle housing 10 when tightened to secure the catheter assembly housing 20 relative to the handle housing 10 in the first direction.

Therefore, the utility model provides a handle 1 and catheter assembly 2 among the conveying system is through setting up a plurality of first joint parts 118 and the second joint part 2011 at the casing edge, the fastening part 106 that the cooperation set up simultaneously in handle 1 or catheter assembly 2 side realizes dismantling of handle casing 10 and catheter assembly casing 20 and is connected, drive block 110 also can dismantle with outer tube seat 209 simultaneously and be connected, but need guarantee that there is not relative displacement in the linear motion direction of drive block 110 after drive block 110 is connected with outer tube seat 209 to turn into the linear motion of drive block 110 outer tube seat 209, outer tube 205.

Referring to fig. 7 and 8, the distal end of the catheter assembly 2 includes an outer tube 205 and an inner tube assembly 206, which are sequentially sleeved, and the outer tube 205 is sleeved outside the inner tube assembly 206. The inner tube assembly 206 comprises, in order from the proximal end to the distal end, an inner tube 2063, a fixation head 2062, and a tapered head 2061. The inner tube 2063 of the inner tube assembly 206 is fixedly attached to the proximal end of the catheter assembly housing 20 of the catheter assembly 2, and the six degrees of freedom of the retaining head 2062 are limited for fixedly supporting the implant 3. The outer tube 205 is linearly reciprocated in the axial direction by driving the outer tube 205 to linearly reciprocate in the axial direction with respect to the inner tube assembly 206, thereby performing operations such as loading, releasing and retrieving the implant 3.

If it is desired to replace the failed handle, the failed handle 1 can be slid directly off the proximal end of the catheter assembly 2 by unscrewing the fastening member 106 to the detached position, wherein the distal end of the outer tube 205 is normally detached from the tapered head 2061, and then the driving block 110 of the new handle 1 is aligned with the outer tube holder 209, and then the handle 1 is slid towards the distal end of the catheter assembly 2 and the fastening member 106 is tightened to secure the handle 1 to the catheter assembly 2 in the first direction.

If it is desired to reuse the handle 1 to reduce the cost of each operation, after the operation is completed, the handle 1 is detached 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.

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 detachable connection of the handle 1 and the catheter assembly can be realized through the connection of clamping grooves of the shells of the handle and the catheter assembly; 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 failure can be quickly responded, and the problem of the handle is avoided from being changed from an interventional operation to a surgical operation to cause greater trauma to a patient; on the other hand, the handle can be reused, the cost of each operation can be reduced, and the economic pressure of a patient is reduced.

2) The utility model skillfully utilizes the characteristic that the outer pipe component and the inner pipe component can generate axial relative displacement, and combines the detachable connection of the driving block and the outer pipe component or the inner pipe component in the third direction, so that the handle and the catheter component can be detached after the handle and the catheter component generate displacement in the first direction; when the handle and the catheter assembly are required to be connected, only the connecting part of the driving block and the outer tube assembly or the inner tube assembly needs to be aligned, namely the driving block slot 1101 clamps the outer tube seat slot 2091, then the two shell clamping slots are connected, in the process, the driving block is connected with the outer tube assembly or the inner tube assembly, the inner tube assembly or the outer tube assembly generates relative axial movement in the shell moving process, the requirement of relative movement of the shell is further met, accurate alignment of the handle and the catheter assembly can be achieved, and the connecting process is simple and time-saving.

3) The structural arrangement of the catheter assembly 2 is concentrated, that is, components contacting blood such as an outer tube assembly, an inner tube assembly, an emptying tube, etc. are concentrated in the catheter assembly 2, and the handle 1 and the catheter assembly 2 are structurally and individually assembled into one integral assembly, independently of each other, so that the manual and electric operations of the handle 1 and the emptying operation of the catheter assembly 2 do not affect each other. The manually operated rotary member, the electrically operated push button and the emptying tube of the duct assembly are at a relatively large spatial distance without moving contacts and interfering with each other's operation. And the emptying pipe is arranged in the conduit assembly 2 instead of the handle 1, so that the problem of seal leakage caused by disassembling the handle 1 does not need to be considered, the structure is simple and reliable, and the emptying pipe can be safely and repeatedly used.

4) The distal end of the catheter assembly 2 is free of obstructions from other components in the handle (e.g., rotating parts or other parts of the handle), leaving more operating space for functional expansion such as closure of the catheter after implant release, rapid withdrawal of the inner tube, etc.

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 (17)

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

the handle shell is provided with a first hollowed-out slot, and the handle shell is provided with a first clamping part along a first direction;

the driving device is connected with the transmission component and controls the transmission component to move;

the transmission part is arranged in the handle shell and comprises a driving block, and the driving block moves towards the near end or the far end of the handle in the first slot under the control of the driving device.

2. The handle of claim 1, wherein the first snap member comprises a first snap groove and a first snap strip, the first snap strip protruding in the second direction and disposed within the first snap groove.

3. The handle of claim 2, wherein the first catch extends in a first direction to form a first rail.

4. The handle of claim 1, wherein the first snap feature comprises a third boss and a fourth boss connected, the third boss extending along the first direction and the fourth boss extending along the third direction, a second opening formed between the third boss, the fourth boss and the edge of the handle shell, the second opening facing the distal end of the handle.

5. The handle of claim 1, wherein the side of the handle housing is provided with a fastening member.

6. The handle of claim 5, wherein the fastening member is a threaded knob including a threaded portion and a knob portion, the knob portion being disposed outside the distal end of the handle housing and protruding beyond an edge of the handle housing in the third direction, the threaded portion being threaded through the handle housing and being threadedly coupled to a fixing member disposed within the handle housing.

7. The handle of claim 1, wherein the drive means comprises a switch, a power source, a control panel, and a motor, the switch being connected to the power source, the power source being connected to the control panel, the control panel being connected to the motor, the motor having an output, the control panel controlling the output of the motor to rotate.

8. The handle according to claim 7, wherein the transmission member comprises a screw rod and a coupler, the screw rod is coaxially arranged with the output end of the motor, one end of the coupler is fixedly connected with the output end of the motor, the other end of the coupler is fixedly connected with one end of the screw rod, a fixing member is connected to the screw rod in a matching manner, and the driving block is fixed on the fixing member.

9. The handle of claim 8, wherein the driving device comprises a manual rotation device and a gear shaft, the transmission member comprises a gear wheel and a pinion, the manual rotation device comprises a manual control unit and a rotation shaft which are fixedly connected, the manual control unit is arranged at the outer side of the proximal end of the handle shell, the rotation shaft penetrates through the handle shell and the gear shaft and is coaxially and fixedly connected with the gear shaft, the gear shaft and the gear wheel are coaxially and fixedly connected, the gear wheel and the pinion are meshed and connected, and the pinion and the lead screw are coaxial and are fixedly connected with the other end of the lead screw.

10. A catheter assembly for delivering an implant, the catheter assembly comprising a catheter assembly housing, an inner tube, an outer tube, and an outer tube mount;

the catheter component shell is provided with a hollow second open slot, and a second clamping part is arranged on the catheter component shell along a first direction;

the inner tube penetrates through the outer tube seat and is arranged in the outer tube, the outer tube seat is movably sleeved outside the inner tube and moves towards the near end or the far end of the catheter component in the second groove, and the far end of the outer tube seat is fixedly connected with the near end of the outer tube.

11. The catheter assembly of claim 10, wherein the second snap feature comprises a first protrusion and a second protrusion connected, the first protrusion extending along the first direction and the second protrusion extending along a third direction, wherein a first opening is formed between the first protrusion, the second protrusion and an edge of the catheter assembly housing, the first opening facing the proximal end of the catheter assembly.

12. The catheter assembly of claim 10, wherein the second snap feature comprises a second snap groove and a second snap strip, the second snap strip protruding in a second direction and disposed within the second snap groove.

13. The catheter assembly of claim 12, wherein the second detent extends in a first direction to form a second guide track.

14. A delivery system for delivering an implant, comprising a handle according to any one of claims 1 to 9 and a catheter assembly according to any one of claims 10 to 13;

the second open slot is matched with the first open slot on the handle shell in position and shape, the first clamping part is matched with the second clamping part in position and shape, and the handle and the catheter component are detachably connected with the second clamping part in the first direction through the first clamping part;

the outer tube seat is fixedly connected with the driving block in the axial direction and detachably connected in the third direction.

15. The delivery system of claim 14, wherein said drive block has a drive block slot therein, said outer tube seat having an outer tube seat slot therein, said drive block slot matingly nesting within said outer tube seat slot.

16. The delivery system of claim 14, wherein the first latch member includes a first latch slot and a first latch strip, the first latch strip projecting in a second direction and disposed within the first latch slot; the second clamping part comprises a first protruding part and a second protruding part which are connected, a first opening is formed between the first protruding part and the edge of the catheter component shell, and the first opening faces to the near end of the catheter component and is clamped on the first clamping strip.

17. The delivery system of claim 14, wherein the side of the handle housing is provided with a threaded knob comprising a threaded portion and a knob portion, the knob portion being disposed outside the distal end of the handle housing and the proximal end face of the knob member protruding beyond the edge of the handle housing in the third direction against the distal outside of the catheter assembly housing.

Images