CN117717692A - Delivery device and delivery method for elongate medical instrument - Google Patents

Abstract

The invention is suitable for the field of interventional surgical instruments, and discloses a conveying device of an elongated medical instrument, which comprises a main body, a connecting piece, an elastic sealing piece, an elastic sleeving piece and a guide piece, wherein the main body is provided with a first channel, and the connecting piece is arranged at the far end of the first channel and is used for connecting the first elongated medical instrument; the elastic sealing element is arranged at the proximal end of the first channel, and an openable or closable notch is arranged on the elastic sealing element along the axial lead of the elastic sealing element; the elastic sleeve joint piece is sleeved at the proximal end of the first channel and is used for opening the notch under the action of external force; the guide is used to guide the second elongate medical instrument from the incision into the first channel and then into the first elongate medical instrument. The conveying device of the embodiment can reduce the control on the conveying device, simplify the operation steps, save the operation time and improve the operation efficiency.

Description

Delivery device and delivery method for elongate medical instrument

Technical Field

The invention relates to the technical field of interventional surgical instruments, in particular to a conveying device and a conveying method of an elongated medical instrument.

Background

The interventional therapy is a minimally invasive therapy by using modern high-tech means, namely, under the guidance of medical imaging equipment, special precise medical instruments such as catheters, guide wires and the like are introduced into a human body to diagnose and treat the in vivo pathological condition locally.

The connecting valve is an important component in the interventional operation application process, and mainly has the effects of connecting the elongated medical devices such as the catheter and the like in the interventional operation process, allowing air, contrast agent or other medical preparations to enter the catheter through the connecting valve, thereby providing a liquid passage for entering a blood vessel, and simultaneously allowing the elongated medical devices such as the guide wire and the like to penetrate the catheter through the connecting valve.

Before and during the intervention, it is necessary to vent the air from the connecting valve. In the conventional exhaust method, a doctor presses a connection valve to exhaust air in the connection valve to the outside of the connection valve. And multiple interventions are required to control the connection valve during interventional procedures, such as threading a guidewire through the connection valve into a catheter. Overall, the control of the connecting valve by the conventional interventional procedure is cumbersome.

Disclosure of Invention

The first aim of the invention is to provide a conveying device of an elongated medical instrument, which aims to solve the technical problem that the control of a connecting valve is complicated in the traditional operation process.

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

a delivery device for an elongate medical instrument, comprising:

a main body provided with a first channel;

a connector disposed at a distal end of the first channel for connecting to a first elongate medical device;

the elastic sealing piece is arranged at the proximal end of the first channel, and an openable or closable notch is arranged on the elastic sealing piece along the axial lead of the elastic sealing piece;

the elastic sleeve joint piece is sleeved at the proximal end of the first channel and is used for opening the notch under the action of external force;

a guide for guiding a second elongate medical instrument from the incision into the first passage and into the first elongate medical instrument.

In some embodiments, the main body is further provided with a second channel communicated with the first channel, the second channel and the first channel are connected at an included angle, and the second channel is used for connecting an external liquid channel.

In some embodiments, the main body includes a housing, a first tube body and a second tube body, the first tube body and the second tube body are integrally connected to the housing, an included angle is formed between an extending direction of the first tube body and an extending direction of the second tube body, and the connecting piece is sleeved at a distal end of the first tube body;

the elastic sleeve joint piece is sleeved on the outer peripheral side of the proximal end of the first pipe body;

the first tube body is hollow in the interior to form the first channel, and the second tube body is hollow in the interior to form the second channel.

In some embodiments, a seal ring is disposed within the connector, the seal ring being compressed between an axially inner end surface of the connector and an end surface of the first tube distal end to seal.

In some embodiments, the outer side of the connector is provided with a rotating member for driving the connector and the first elongate medical instrument to rotate in unison.

In some embodiments, the incision is a cross-slot incision.

In some embodiments, the guide is a guide needle.

In some embodiments, the guide may be configured to allow the second elongate medical device to pass into the interior thereof.

In some embodiments, the delivery device further comprises a securing mechanism disposed on the body and located outside the proximal end of the first channel for securing the second elongate medical instrument.

A second object of the present invention is to provide a method for transporting an elongated medical device, which is applied to the above-mentioned transporting device of an elongated medical device, the method comprising:

controlling the first elongate medical device to be mounted on the connector to communicate with the first elongate medical device and the first passageway;

controlling the penetration of a portion of the second elongate medical instrument into the guide;

pressing the elastic sleeve part along the radial direction of the elastic sealing part so as to enable the outer peripheral surface of the elastic sealing part to bear the pressure along the radial direction of the elastic sealing part, thereby opening the notch;

controlling the guide to guide the second elongate medical device from the incision through the first channel and then through the first elongate medical device; and

and withdrawing the guide member and removing the pressing of the elastic sleeve member, wherein the elastic sealing member closes at least part of the incision so that the inner peripheral surface of the incision is attached to the outer peripheral surface of the second slender medical instrument.

The conveying device of the slender medical instrument provided by the invention has the following beneficial effects:

in the conveying device of the elongated medical device of the embodiment, the incision of the elastic sealing element is opened by applying the external force along the radial direction of the elastic sealing element to the elastic sleeve joint element, the incision opening control mode is simple, the operation steps of opening the incision are simplified, and the incision is opened in a proper size.

In the conveying device for the elongated medical device, the guide piece is used for guiding the second elongated medical device to penetrate into the first elongated medical device, so that the second elongated medical device can conveniently and quickly penetrate into the first elongated medical device, the operation time is saved, and the operation efficiency is improved.

Moreover, the elastic sealing piece has elasticity, when the guide piece is withdrawn and the external force applied to the elastic sleeve joint piece is removed, the elastic sealing piece not only can rebound to the elastic sleeve joint piece, so that the elastic sleeve joint piece is restored to the original position, but also has the trend of restoring to the original position, the incision is contracted to a certain extent, the inner peripheral surface of the incision is attached to the outer peripheral surface of the second slender medical instrument, and the elastic sealing piece can play a certain sealing role when penetrating into the second slender medical instrument, and the phenomenon of liquid leakage at the incision is effectively avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing a state in which a delivery device for an elongated medical device according to an embodiment of the present invention delivers an elongated medical device;

FIG. 2 is a schematic view of a delivery device for an elongate medical device according to an embodiment of the present invention;

FIG. 3 is a schematic view of a portion of a delivery device for an elongate medical instrument according to an embodiment of the present invention;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a cross-sectional view taken along the direction A-A in FIG. 4;

FIG. 6 is an enlarged partial schematic view at a in FIG. 5;

FIG. 7 is a schematic view showing an assembled structure of a fixing mechanism and a main body in a delivery device of an elongated medical device according to an embodiment of the present invention;

FIG. 8 is a schematic view of the structure of an elastic seal in a delivery device for an elongate medical device according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a guide member in a delivery device for an elongated medical device according to an embodiment of the present invention.

Reference numerals illustrate:

10. a delivery device for an elongate medical device; 20. a first elongate medical device; 30. a second elongate medical device;

100. a main body; 110. a first channel; 111. a first bore section; 112. a second bore section; 113. a third bore section; 114. a first step end face; 115. a second step end face; 120. a second channel; 121. an interface; 130. a housing; 140. a first tube body; 150. a second tube body;

200. a connecting piece; 210. a seal ring; 220. a rotating member;

300. an elastic seal; 310. a notch; 320. a first sealing part; 330. a second sealing part;

400. an elastic sleeve;

500. a guide member; 510. an elongated conduit; 520. a guide sleeve; 521. a guide opening;

600. a fixing mechanism; 610. a first clamping part; 620. and a second clamping part.

Detailed Description

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

It should be noted that all directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship between the components, the movement condition, etc. in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.

It will also be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected to the other element through intervening elements.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

As used herein, the distal direction is the direction toward the patient and the proximal direction is the direction away from the patient. For example, in the following, the distal end of the first channel refers to the end facing the patient, the proximal end of the first channel refers to the end facing away from the patient, the distal end of the first tube refers to the end facing the patient, and the proximal end of the first tube refers to the end facing away from the patient.

Referring to fig. 1 to 3, and in combination with fig. 5, a delivery device 10 for an elongated medical device according to an embodiment of the present invention includes a main body 100, a connector 200, an elastic sealing member 300, an elastic socket 400, and a guide member 500, wherein the main body 100 is provided with a first channel 110, and the connector 200 is provided at a distal end of the first channel 110 and is used to connect the first elongated medical device 20 so that the first channel 110 communicates with an interior of the first elongated medical device 20. The elastic sealing member 300 is installed at the proximal end of the first channel 110, and the elastic sealing member 300 is provided with an openable or closable slit 310 along its axis. The elastic socket 400 is sleeved on the proximal end of the first channel 110, and the elastic socket 400 is used for opening the notch 310 under the action of external force. The guide 500 is used to guide the second elongate medical instrument 30 from the incision 310 into the first channel 110 and into the first elongate medical instrument 20. Thus, in use, when an external force is applied to the resilient socket 400 in a radial direction of the resilient seal 300, the resilient socket 400 can be used to compress the resilient seal 300 to open the slit 310, and the guide 500 can guide the second elongate medical device 30 penetrating into the interior thereof from the slit 310 into the first channel 110 and into the first elongate medical device 20.

In this embodiment, before the second elongate medical instrument 30 is guided through the incision 310 by using the guide member 500, an external force along the radial direction of the elastic sealing member 300 can be applied to the elastic socket member 400 to open the incision 310 of the elastic sealing member 300, so that the incision 310 is opened in a simple manner, the operation steps of opening the incision 310 are simplified, the incision 310 is opened in a proper size, and the guide member 500 and the second elongate medical instrument 30 can pass through the opened incision 310. The guide member 500 is used to guide the second elongated medical device 30 to penetrate into the first channel 110 from the incision 310 and then penetrate into the first elongated medical device 20, so that the second elongated medical device 30 can conveniently and quickly penetrate into the first elongated medical device 20, the operation duration is saved, and the operation efficiency is improved.

Moreover, the elastic sealing member 300 has elasticity, when the external force applied to the elastic sleeve member 400 is removed, the elastic sealing member 300 can rebound to the elastic sleeve member 400 to enable the elastic sleeve member 400 to restore to the original position, and the elastic sealing member 300 can elastically close at least part of the incision 310 to reduce the opening range of the incision 310, so that the control of the conveying device can be reduced, and when the guide member 500 is withdrawn and the external force applied to the elastic sleeve member 400 is removed, the elastic sealing member 300 has the tendency of restoring to the original state, so that the incision 310 is contracted to a certain extent, the inner peripheral surface of the incision 310 can be attached to the outer peripheral surface of the second elongated medical instrument 30, and the elastic sealing member 300 can play a certain sealing role when penetrating into the second elongated medical instrument 30, and the liquid leakage phenomenon at the incision 310 can be effectively avoided.

In this embodiment, the first elongate medical device 20 includes, but is not limited to, catheter-based interventional medical devices such as guide catheters, microcatheters, contrast catheters, and balloon dilation catheters. The second elongate medical device 30 includes, but is not limited to, guide-type interventional medical devices such as guide wires, micro-wires, and the like.

In summary, the conveying device 10 for an elongated medical device according to the present embodiment is applied to interventional operations, and can replace connection valves such as a T valve and a Y valve, so as to avoid excessive intervention and control of the connection valves in the operation process, solve the problem that the control of the connection valves by the operation process is complicated, and the conveying device 10 for an elongated medical device according to the present embodiment can realize connection of a catheter and convey a guide wire into the operation process of the catheter, thereby simplifying the operation steps, saving the operation time, and improving the operation efficiency.

Referring to fig. 1 and 3, the guide 500 may allow the second elongated medical device 30 to penetrate into the guide 500, so that a gap for flowing out liquid and the like can be formed between the second elongated medical device 30 and the guide 500, and thus, due to the pressure of human blood in the first channel 110, blood and air bubbles can flow out of a gap space enclosed between the inner peripheral surface of the guide 500 and the outer peripheral surface of the second elongated medical device 30, thereby playing a role of automatic air exhaust, and the whole process does not need to perform operations such as pressing and air exhaust on the conveying device, thereby reducing control on the conveying device itself and reducing operation steps in the operation process. It should be appreciated that the delivery device 10 of the elongate medical instrument of the present embodiment also enables an automatic venting function during delivery of the guidewire into the catheter.

Referring to fig. 1 and 3, the main body 100 is further provided with a second passage 120 communicating with the first passage 110, the second passage 120 being connected to the first passage 110 at an angle, the second passage 120 being for connecting an external liquid passage.

In this embodiment, the body 100 is provided with a second channel 120 in communication with the first channel 110, the second channel 120 and the first channel 110 being connected at an angle, such that the guide 500 guides the second elongate medical device 30 over the second channel 120 and into the first elongate medical device 20. The second channel 120 can be connected to an external liquid channel, so that a contrast agent, heparin water, etc. can be injected into the main body 100 through the second channel 120, and the delivery device can further realize functions of hand-pushing contrast agent, high-pressure contrast agent, heparin instillation, etc., without limitation.

Referring to fig. 3, in one embodiment, an interface 121 is disposed at an end of the second channel 120 away from the first channel 110, so as to facilitate connection to an external fluid path. Illustratively, the interface 121 is a luer connector.

Referring to fig. 1 to 3, and referring to fig. 5, the main body 100 includes a housing 130, a first tube 140 and a second tube 150, the first tube 140 and the second tube 150 are integrally connected to the housing 130, an angle is formed between an extending direction of the first tube 140 and an extending direction of the second tube 150, and the connecting member 200 is sleeved at a distal end of the first tube 140; the elastic sleeve 400 is sleeved on the proximal end periphery side of the first tube 140; the first tube 140 is hollow at the inside to form the first channel 110, and the second tube 150 is hollow at the inside to form the second channel 120.

In this embodiment, the main body 100 includes a housing 130, a first tube 140 and a second tube 150, and the first tube 140 and the second tube 150 are integrally connected to the housing 130, and an included angle is formed between an extending direction of the first tube 140 and an extending direction of the second tube 150, and the included angle between the first tube 140 and the second tube 150 may be 90 degrees or other angles, which is not limited in this embodiment. The integral structure of the body prevents the first tube 140 and the second tube 150 from being offset relative to the housing 130, thereby improving the position stability of the first channel 110 and the second channel 120, helping to improve the delivery stability of the second elongate medical device 30 penetrating into the first elongate medical device 20 and preventing the second elongate medical device 30 from entering into the second channel 120 during delivery.

As shown in fig. 4 and 5, in one embodiment, the elastic sealing element 300 is accommodated in the first pipe body 140, and the portion of the first pipe body 140 connected to the elastic socket joint element 400 is elastic, so that when the elastic socket joint element 400 is conveniently applied with a pressing force, the first pipe body 140 can be pressed to press the elastic sealing element 300, and the notch 310 on the elastic sealing element 300 is facilitated to be opened. At least a portion of the outer circumferential surface of the elastic sealing member 300 abuts against the inner circumferential surface of the proximal end of the first tube body 140 to seal the proximal end of the first passage 110, prevent leakage of the first passage 110, and improve the mounting stability of the elastic sealing member 300.

Referring to fig. 4, in an embodiment, the elastic socket 400 is integrally sleeved on the outer peripheral surface of the distal end of the first tube 140, so as to simplify the connection between the elastic socket 400 and the first tube 140.

As shown in fig. 4 to 6, in a specific embodiment, the first channel 110 includes a first hole section 111, a second hole section 112 and a third hole section 113 that are sequentially communicated along the same axis, the inner diameter of the first hole section 111 and the inner diameter of the third hole section 113 are both larger than the inner diameter of the second hole section 112, a first step end surface 114 is formed at the junction of the first hole section 111 and the second hole section 112, a second step end surface 115 is formed at the junction of the second hole section 112 and the third hole section 113, the elastic sealing element 300 is disposed on the second hole section 112, at least part of the outer peripheral surface of the elastic sealing element 300 elastically abuts against the inner peripheral surface of the second hole section 112 to seal, one axial end surface of the elastic sealing element 300 elastically abuts against the first step end surface 114, and the other axial end surface of the elastic sealing element 300 elastically abuts against the second step end surface 115, so that the connection stability of the elastic sealing element 300 is improved, and the sealing effect of the elastic sealing element 300 on the first channel 110 is improved.

As shown in fig. 4 to 6, and in combination with fig. 8, in the embodiment in which the first passage 110 includes the first hole section 111, the second hole section 112, and the third hole section 113 that are sequentially communicated along the same axis, the elastic seal 300 includes the first seal portion 320 and the second seal portion 330 that are sequentially connected along the axial direction thereof, the structure of the elastic seal 300 is simplified, the outer diameter of the first seal portion 320 is larger than the outer diameter of the second seal portion 330, the slit 310 sequentially penetrates the first seal portion 320 and the second seal portion 330, and part of the first seal portion 320 is elastically abutted against the first step end surface 114 and part of the second seal portion 330 is elastically abutted against the second step end surface 115 along the axial direction of the elastic seal 300.

In a specific embodiment, as shown in fig. 2 and 3, the main body 100 is regarded as a sterile box body of the sterile box, and the first channel 110 and the second channel 120 are both arranged on the sterile box body and applied to the surgical robot, so that consumables used during surgery can be reduced, and the surgical cost is saved.

Referring to fig. 4 and 5, a sealing ring 210 is provided in the connector 200, and the sealing ring 210 is compressed between an axially inner end surface of the connector 200 and an end surface of the distal end of the first tube 140 to seal against leakage of liquid. In one embodiment, the distal end of the first tube 140 extends out of a connection end (not labeled) along the axial direction of the first tube 140, the outer diameter of the connection end is smaller than that of the first tube 140, and the sealing ring 210 is disposed around the outer periphery of the connection end, so as to improve the connection stability of the sealing ring 210.

Referring to fig. 1, 4 and 5, a rotating member 220 is provided at an outer side surface of the connection member 200, and the rotating member 220 is used to drive the connection member 200 and the first elongate medical device 20 to rotate synchronously, so that when the first elongate medical device 20 needs to be rotated during the operation, the rotating member 220 is driven to rotate by using an external driving force, and thus the rotating member 220 drives the connection member 200 and the first elongate medical device 20 to rotate synchronously. Further in combination with the embodiment in which the sealing ring 210 is provided within the connector 200, the sealing ring 210 also serves to prevent leakage of fluid within the first channel 110 when the connector 200 and the first elongate medical device 20 are rotated.

Referring to fig. 1, in one embodiment, the connector 200 may be a luer connector or other connector for enabling secure connection to the first elongate medical device 20, and the embodiment is not particularly limited. The rotating member 220 is a rotating gear, and the rotating member 220 is surrounded on the outer circumferential surface of the connecting member 200 and fixed to the connecting member 200, and the rotating gear is engaged with the external driving gear, so that the external driving gear outputs rotating power to drive the rotating member 220 to rotate.

Referring to fig. 2 and 8, in an embodiment, the elastic socket 400 includes an elastic shroud (not shown) surrounding the proximal end of the first tube 140, and an elastic cover plate (not shown) connected to the side of the shroud away from the connector 200, and the structure of the elastic socket 400 is simplified, and a via hole is provided in the middle of the elastic cover plate to expose the elastic seal 300.

Referring to fig. 8, the slit 310 is a cross-slot slit 310, facilitating the elastic seal 300 to be squeezed open.

Referring to fig. 1, 3 and 5, the guide 500 is a guide needle. In this embodiment, a guide needle is used as the guide 500, and the guide 500 guides and supports the second elongate medical device 30 passing therethrough, assisting the second elongate medical device 30 to pass from the incision 310 into the first passageway 110 and then into the first elongate medical device 20.

Referring to fig. 1 and 9, in a specific embodiment, the guide needle is in an elongated shape, and the guide needle can penetrate into the second elongated medical device 30, such as a guide wire, and the guide needle has an inner dimension larger than the outer diameter of the second elongated medical device 30, so that a gap for air bubbles and blood to flow out is formed between the guide needle and the second elongated medical device 30. Specifically, the guide 500 includes an elongated tube 510 and a guide sleeve 520 connected in sequence, the elongated tube 510 being configured to receive a portion of the second elongated medical device 30, the guide sleeve 520 being configured to allow the second elongated medical device 30 to pass through the elongated tube 510, the elongated tube 510 having an inner diameter greater than an outer diameter of the second elongated medical device 30, the guide sleeve 520 being provided at an end thereof remote from the elongated tube 510 with a guide opening 521 for allowing a head end of the second elongated medical device 30 to pass through.

Referring to fig. 3 and 7, the delivery device further includes a securing mechanism 600, the securing mechanism 600 being disposed on the body 100 and outside the proximal end of the first channel 110 for securing the second elongate medical instrument 30.

The fixing mechanism 600 is provided in this embodiment for fixing the second elongated medical device 30, and the fixing mechanism 600 is located outside the proximal end of the first channel 110, so that the fixing mechanism 600 can fix the second elongated medical device 30 exposed outside the main body 100, and the fixing manner is simple. In one embodiment, the securing mechanism 600 includes a first clamping portion 610 and a second clamping portion 620 on diametrically opposite sides of the second elongate medical device 30, the first clamping portion 610 being configured to move toward or away from the second clamping portion 620 under an external driving force to clamp or release the second elongate medical device 30 and thereby secure or release the second elongate medical device 30.

Referring to fig. 1 to 3, and referring to fig. 5, an embodiment of the present invention further provides a method for conveying an elongated medical device, which is applied to the conveying apparatus 10 for an elongated medical device, and includes:

controlling the first elongate medical instrument 20 to be mounted on the connector 200 to communicate the first elongate medical instrument 20 with the first channel 110;

the elastic socket 400 is pressed in the radial direction of the elastic sealing member 300 so that the outer circumferential surface of the elastic sealing member 300 is pressurized in the radial direction thereof, thereby opening the slit 310;

the control guide 500 guides the second elongate medical instrument 30 from the incision 310 into the first channel 110 and subsequently into the first elongate medical instrument 20; and

the guide 500 is withdrawn and the compression of the resilient socket 400 is removed, and the resilient seal 300 closes at least part of the slit 310 such that the inner circumferential surface of the slit 310 conforms to the outer circumferential surface of the second elongate medical instrument 30.

In the method for conveying an elongated medical device according to the present embodiment, before penetrating into a second elongated medical device 30, a first elongated medical device 20 is installed, and then the elastic socket 400 is pressed along the radial direction of the elastic sealing member 300, so that the outer circumferential surface of the elastic sealing member 300 is subjected to pressure along the radial direction thereof, thereby opening the slit 310, the manner of opening the slit 310 is simple, the operation steps of opening the slit 310 are simplified, and the slit 310 is opened to a proper size.

Then, the second elongated medical device 30 is guided to penetrate into the first channel 110 from the incision 310 by using the guide member 500, and then penetrates into the first elongated medical device 20, so that the second elongated medical device 30 can conveniently and quickly penetrate into the first elongated medical device 20, the operation duration is saved, and the operation efficiency is improved.

Moreover, the elastic sealing element 300 has elasticity, so that the control on the conveying device can be reduced, when the guide element 500 is withdrawn and the pressing on the elastic sleeve joint element 400 is removed, the elastic sealing element 300 can rebound to the elastic sleeve joint element 400, so that the elastic sleeve joint element 400 is restored to the original position, the elastic sealing element 300 has a tendency to restore to the original state, the incision 310 is contracted to a certain extent, the inner peripheral surface of the incision 310 can be attached to the outer peripheral surface of the second slender medical instrument 30, and the elastic sealing element 300 can play a certain sealing role when penetrating into the second slender medical instrument 30, so that the liquid leakage phenomenon at the incision 310 is effectively avoided.

In one embodiment, controlling the penetration of a portion of the second elongate medical instrument 30 into the guide 500 prior to pressing the resilient socket 400 in the radial direction of the resilient seal 300 improves the stability of the process of the guide 500 guiding the second elongate medical instrument 30 into the first elongate medical instrument. Meanwhile, the guide member 500 can be used for the second elongated medical device 30 to penetrate into the guide member 500, so that a gap can be formed between the second elongated medical device 30 and the guide member 500, and thus, the blood and air bubbles can flow out of the gap space in the first channel 110 due to the pressure of human blood, and the effect of automatic exhaust is achieved.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (10)

1. A delivery device for an elongate medical instrument, comprising:

a main body provided with a first channel;

a connector disposed at a distal end of the first channel for connecting to a first elongate medical device;

the elastic sealing piece is arranged at the proximal end of the first channel, and an openable or closable notch is arranged on the elastic sealing piece along the axial lead of the elastic sealing piece;

the elastic sleeve joint piece is sleeved at the proximal end of the first channel and is used for opening the notch under the action of external force;

a guide for guiding a second elongate medical instrument from the incision into the first passage and into the first elongate medical instrument.

2. The delivery device of an elongate medical instrument of claim 1, wherein the body is further provided with a second channel in communication with the first channel, the second channel being connected at an angle to the first channel, the second channel being adapted to connect to an external fluid path channel.

3. The delivery device of an elongated medical device according to claim 2, wherein the main body comprises a housing, a first tube and a second tube, the first tube and the second tube are integrally connected to the housing, an angle is formed between an extending direction of the first tube and an extending direction of the second tube, and the connecting piece is sleeved at a distal end of the first tube;

the elastic sleeve joint piece is sleeved on the outer peripheral side of the proximal end of the first pipe body;

the first tube body is hollow in the interior to form the first channel, and the second tube body is hollow in the interior to form the second channel.

4. A delivery device for an elongate medical device as recited in claim 3 wherein a sealing ring is disposed within the connector, the sealing ring being compressed between an axially inner end surface of the connector and an end surface of the distal end of the first tube body for sealing.

5. A delivery device for an elongate medical instrument as recited in claim 3 wherein the outer side of the connector is provided with a rotating member for driving the connector and the first elongate medical instrument in a synchronous rotation.

6. The delivery device of an elongate medical instrument of any one of claims 1-5, wherein the incision is a cross-slot incision.

7. The delivery device of an elongate medical device according to any one of claims 1-5, wherein the guide is a guide needle.

8. The delivery device of any of claims 1-5, wherein the guide member is adapted to allow the second elongate medical device to pass into its interior.

9. The delivery device of an elongate medical instrument of any one of claims 1-5, further comprising a securing mechanism disposed on the body and located outside the proximal end of the first channel for securing the second elongate medical instrument.

10. A method of delivering an elongate medical device as claimed in any one of claims 1 to 9, wherein the method comprises:

controlling the first elongate medical device to be mounted on the connector to communicate with the first elongate medical device and the first passageway;

pressing the elastic sleeve part along the radial direction of the elastic sealing part so as to enable the outer peripheral surface of the elastic sealing part to bear the pressure along the radial direction of the elastic sealing part, thereby opening the notch;

controlling the guide to guide the second elongate medical device from the incision through the first channel and then through the first elongate medical device; and

and withdrawing the guide member and removing the pressing of the elastic sleeve member, wherein the elastic sealing member closes at least part of the incision so that the inner peripheral surface of the incision is attached to the outer peripheral surface of the second slender medical instrument.