CN116077137A

CN116077137A - Separated type bolt suction device

Info

Publication number: CN116077137A
Application number: CN202211355656.6A
Authority: CN
Inventors: 吴重草; 翟梦林; 刘振全; 孙冰; 贾晶
Original assignee: Shanghai Warm Sun Medical Instrument Co ltd
Current assignee: Shanghai Warm Sun Medical Instrument Co ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2023-05-09
Also published as: CN115300043A

Abstract

The invention discloses a separated type suction plug device which comprises a suction plug head and a pushing structure, wherein the suction plug head comprises a suction plug proximal end close to the pushing structure end and a suction plug distal end with radial expansion performance, the suction plug distal end is of an elastic structure, the outer diameter of the suction plug distal end after radial expansion is larger than the diameter of the suction plug proximal end, the suction plug head is in a funnel shape with the diameter gradually reduced from the suction plug distal end to the suction plug proximal end after radial expansion, the pushing structure distal end is not fixedly connected with the suction plug proximal end or is connected with the suction plug distal end through a releasable structure, and a suction plug cavity which penetrates through the suction plug head and is axially arranged in the suction plug head. The invention has the advantages that the bolt suction head can be matched with a common catheter to realize the function of sucking and sucking the bolt, and the bolt suction head can be directly arranged at the far end of the catheter, so that the bolt suction head can be combined with the catheter to be used as a suction device, can be directly sucked through the catheter, has small use limit, has a larger caliber, simultaneously occupies less catheter cavity, and can realize larger bolt suction efficiency.

Description

Separated type bolt suction device

The present application is a divisional application of patent application with application number 202211000478.5, titled "a catheter with releasable head end", day 2022, 8, 19.

[ field of technology ]

The invention relates to the technical field of medical appliances, in particular to the technical field of a separated type thrombus absorbing device.

[ background Art ]

The current common mechanical thrombus taking auxiliary device comprises a thrombus taking bracket and a suction catheter, wherein the common suction catheter is matched with a suction pump and a connecting pipe to carry out reperfusion after the bracket is used for thrombus taking or medicine thrombolysis, or a direct back suction first pass technology [ ADAPT ] is used for directly applying mechanical suction to the reperfusion catheter to carry out thrombus taking. To achieve as complete retrieval of the embolic as possible, the vessel is completely interrupted, while the catheter has a larger caliber and lumen enabling a higher aspiration efficiency.

The patent of the issued publication CN107205751B discloses a thrombi removing device comprising a delivery catheter, a self-expandable funnel and a suction funnel catheter. The device can suck the thrombus from a position very close to the thrombus by using a larger opening, can occlude the artery, stops flowing and sucks the whole thrombus without breaking the thrombus; but its double-catheter construction would sacrifice the inner diameter of the aspiration catheter to some extent, losing aspiration efficiency.

The invention of application publication number CN111867495a discloses a clot removal device comprising an expandable treatment member and a delivery wire, which can be equally applied to capture a clot in the treatment of ischemia, but which does not have a safe release/retrieval means to ensure its release in the correct position of the blood vessel.

[ invention ]

The invention aims to solve the problems in the prior art, and provides a separated type thrombus sucking device which can be matched with a catheter to directly suck thrombus through the catheter so as to realize larger thrombus sucking efficiency.

In order to achieve the above purpose, the invention provides a separated type suction plug device, which comprises a suction plug head and a pushing structure, wherein the suction plug head comprises a suction plug proximal end arranged close to the pushing structure end and a suction plug distal end with radial expansion performance, the suction plug distal end is of an elastic structure, the outer diameter of the suction plug distal end after radial expansion is larger than the diameter of the suction plug proximal end, the suction plug head is in a funnel shape with the diameter gradually reduced from the suction plug distal end to the suction plug proximal end after radial expansion, the pushing structure distal end is not fixedly connected with the suction plug proximal end, and a suction plug cavity which penetrates through the suction plug head and is axially arranged is arranged in the suction plug head.

Preferably, the pushing structure is one or a combination of a plurality of pushing rods, springs and hypotubes with bending performance.

Preferably, the pushing structure further comprises a traction wire, and the distal end of the traction wire is fixedly connected with the proximal end of the suction plug.

Preferably, the pushing structure is provided with a supporting block at the distal end, which is in interference fit with the proximal end of the suction bolt.

Preferably, the outer wall of the proximal end of the suction bolt is provided with at least three protruding points protruding outwards or a protruding ring protruding outwards.

Preferably, the outer surface of the proximal end of the suction plug is provided with a first friction surface with friction force larger than that of the rest outer surface parts of the suction plug head, and the first friction surface is formed by coating, hot melting or surface treatment.

Preferably, a developing element is arranged on the distal end of the pushing structure and/or the bolt suction head.

Preferably, the proximal end of the suction plug has a tendency to expand gradually outwardly from the distal end to the proximal end.

Preferably, the suction plug head is a woven structure woven by metal wires, and a coating film is arranged on the surface of the distal end of the suction plug.

Preferably, in the free state, the proximal end of the suction plug and the distal end of the suction plug have the same braiding angle.

The separated type bolt suction device has the beneficial effects that: the invention has the advantages that the bolt suction head can be matched with a common catheter to realize the function of sucking and sucking the bolt, the use is more convenient, the bolt suction head can be directly arranged at the far end of the catheter, so that the bolt suction head can be combined with the catheter to be used as a suction device, the suction can be directly performed through the catheter, a suction mechanism is not required to be additionally arranged in the catheter, the use limit is small, the channel of the catheter is less occupied while the bolt suction head has a larger caliber, the bolt suction efficiency can be realized, and the pushing structure and the bolt suction head are separated, so that the pushing structure can be withdrawn from the catheter after the bolt suction head is pushed, and the suction is convenient.

The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic diagram of a main view of a suction head and a pushing structure of a separate type suction device according to the present invention.

Fig. 2 is a schematic view of a separate type of the present invention, which is a combination of a catheter and a separate type of the present invention.

Fig. 3 is a schematic view showing a release state structure of a separate type of the hydrant apparatus according to an embodiment of the present invention.

FIG. 4 is a schematic view of the sectional structure B-B in FIG. 1.

Fig. 5 is a schematic cross-sectional view of a catheter embodiment of the invention having a releasable head end.

Fig. 6 is a schematic view of a three-section structure of an embodiment of the invention with a releasable head end.

Fig. 7 is a schematic cross-sectional view of an embodiment of the invention having a releasable head end.

Fig. 8 is a schematic diagram of a fifth embodiment of the present invention having a releasable head end.

Fig. 9 is a six-section schematic view of an embodiment of the invention having a releasable head end.

Fig. 10 is a schematic view of a seventh cross-sectional structure of an embodiment of the invention having a releasable head end.

In the figure: 1-bolt suction head, 2-catheter, 3-pushing structure, 101-bolt suction far end, 102-bolt suction near end, 13-salient point, 111-slide rail, 112-slide groove, 21-step hole section, 211-limit mechanism closing limit part, 212-second friction surface, 301-block, 302-pushing rod, 303-traction wire and 1011-first friction surface.

[ detailed description ] of the invention

The present invention will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.

In the description of the present invention, it will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. 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.

In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships in which the inventive product is conventionally placed in use, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one unless specifically defined otherwise.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Embodiment one:

referring to fig. 1, 2 and 3, a separate type of hydrant apparatus according to the present invention includes a hydrant head 1 and a pushing structure 3. The suction plug head 1 comprises a suction plug proximal end 102 close to the end of the pushing structure 3 and a suction plug distal end 101 with radial expansion performance, wherein the suction plug distal end 101 is of an elastic structure, the outer diameter of the suction plug distal end 101 after radial expansion is larger than the diameter of the suction plug proximal end 102, the suction plug head 1 is in a funnel shape with the diameter gradually reduced from the suction plug distal end 101 to the suction plug proximal end 102 after radial expansion, the pushing structure 3 distal end is not fixedly connected with the suction plug proximal end 102, and a suction plug cavity which penetrates through the suction plug head 1 and is axially arranged is arranged in the suction plug head 1. In this embodiment, the bolt suction head 1 can be matched with the common catheter 2 to realize the function of sucking and sucking the bolt, so that the use is more convenient, the bolt suction head 1 can be directly arranged at the far end of the catheter 2, thereby being combined with the catheter 2 to be used as a sucking device, sucking can be directly performed through the catheter 2, a sucking mechanism is not required to be additionally arranged in the catheter 2, the use limit is small, the catheter cavity is less occupied while the catheter has a larger caliber, and the larger bolt suction efficiency can be realized.

Referring to fig. 1, 2 and 3, which are schematic structural views of the present embodiment when the catheter 2 is mated with the catheter 2, the catheter 2 has a tube lumen disposed along an axial direction thereof; the suction bolt head 1 can be axially and slidably arranged in the distal end of the tube cavity, the suction bolt distal end 101 can be slidably arranged at the distal end of the tube cavity and can be kept in the tube cavity all the time, the pushing structure 3 can be slidably arranged in the tube cavity, and the proximal end of the pushing structure 3 extends out of the catheter 2. In this embodiment, the suction plug head 1 can be matched with the common catheter 2, the suction plug head 1 is arranged at the distal end of the catheter 2, the suction plug head 1 can be slidably arranged at the distal end of the tube cavity, the suction plug head 1 is not required to be conveyed through another pipeline, the use is more convenient, the conveying, releasing and recycling of the suction plug head 1 can be realized through a single catheter 2, the suction plug head 1 is stored at the distal end of the tube cavity in the delivery state, when the suction plug head 1 is delivered to a proper position, the suction plug head 1 is pushed in the distal direction through the pushing structure 3 until the suction plug distal end 101 is released out of the tube cavity, the suction plug proximal end 102 is limited at the distal end of the tube cavity, the suction plug distal end 101 is radially self-expanded or is assisted to be expanded through traction/sacculus and the like, the pushing structure 3 can be separated from the suction plug head 1 and withdrawn from the catheter 2, so that thrombus suction can be directly carried out through the cooperation of the tube cavity and the suction plug head 1, and various auxiliary plug taking devices can be introduced into the tube cavity.

Preferably, the pushing structure 3 is a pushing rod with bending properties. In this embodiment, a pushing rod is selected as the pushing structure 3, and the shape of the pushing rod is adapted to the lumen of the tube, so that the pushing rod can slide along the lumen of the tube, and is convenient to cooperate with the proximal end 102 of the suction plug, so that the distal end 101 of the suction plug is pushed out of the lumen of the tube. In another alternative embodiment, the spring and the hypotube can also be used as the pushing structure 3 in the present application, and the spring and the hypotube can only be arranged and shaped to adapt to the inner cavity of the tube, so that the spring and the hypotube can slide along the inner cavity of the tube.

Embodiment two:

referring to fig. 4 and 5, the distal end of the pushing structure 3 is provided with a abutment 301 that is in interference fit with the proximal end 102 of the stopper. The pushing block 301 is abutted against the bolt suction head 1 to push the bolt suction head 1, so that the phenomenon that the pushing structure 3 cannot push due to too soft distal end is avoided.

Referring to fig. 4 and 5, four protruding points 13 protruding outwards are arranged on the outer wall of the proximal end 102 of the suction bolt, so that the proximal end 102 of the suction bolt can be tightly attached to the inner wall of the inner cavity of the tube, stability is improved, and falling-off is prevented.

Referring to fig. 4 and 5, four sliding grooves 112 which are in sliding fit with the protruding points 13 are formed in the inner wall of the distal end of the tube cavity. The two ends of the chute 112 are closed. The bump 13 is matched with the sliding groove 112 with two closed ends to limit the proximal end 102 of the suction bolt, so that the proximal end 102 of the suction bolt is prevented from being separated from the distal end of the inner cavity of the tube, and the safety is improved.

Embodiment III:

referring to fig. 6, the outer wall of the proximal end 102 of the stopper is provided with an outwardly projecting collar 14. The distal end of the tube lumen of the corresponding catheter 2 is provided with a stop mechanism closing-in stop 211 having a diameter smaller than the diameter of the collar 14 to prevent the proximal end 101 of the delivery head from exiting the distal end of the tube lumen. The limiting mechanism closing-in limiting part 211 can be matched with the outer ring of the convex ring 14, the proximal end 101 of the release head is limited in the inner cavity of the tube, and the bolt suction head 1 is prevented from being separated from the guide tube 2.

Embodiment four:

referring to fig. 7, the outer surface of the proximal end 102 of the suction plug is provided with a first friction surface 1011 having a friction force greater than that of the rest of the outer surface of the suction plug head 1, and the first friction surface 1011 is formed by coating, hot melting or surface treatment. A second friction surface 212 is provided at the distal opening of the corresponding lumen for mating with the first friction surface 1011 to prevent removal of the proximal end 102 of the stopper from the lumen. By friction fit of the first friction surface 1011 with the second friction surface 212, a greater friction force can be generated, thereby confining the proximal end 102 of the stopper to the distal end of the lumen of the tube, avoiding detachment of the proximal end 102 of the stopper.

Preferably, the distal end of the pushing structure 3 and the stopper head 1 are provided with developing elements. The position of the bolt suction head 1 can be positioned through the developing element, so that the releasable head end 1 is prevented from being excessively pushed or not pushed in place.

Fifth embodiment:

referring to fig. 8, the proximal end 102 of the suction plug has a tendency to gradually expand outwardly from the distal end to the proximal end, and the proximal end 102 of the suction plug may abut against the inner wall of the catheter 2 when inside the catheter 2, so as to prevent the proximal end 102 of the suction plug from being separated from the catheter 2, and to improve the sealing between the proximal end 102 of the suction plug and the catheter 2, and to improve the suction performance.

Example six:

referring to fig. 9, the pushing structure 3 further includes a traction wire 303, and a distal end of the traction wire 303 is fixedly connected to the proximal end 102 of the suction plug. When the suction plug head 1 is in a release state and needs to be recovered, the suction plug head 1 can be pulled to be retracted through the traction wire 303 until the suction plug head 1 is retracted into the inner cavity of the tube, so that the suction plug head 1 can be retracted conveniently.

Embodiment seven:

referring to fig. 10, in this embodiment, the distal end of the pushing structure 3 is connected to the proximal end 102 of the suction plug by a releasable structure, and the releasable structure is a threaded connection. Specifically, the outer wall of the distal end of the pushing structure 3 and the inner wall of the proximal end 102 of the suction plug are respectively provided with mutually meshed threads, the pushing structure 3 is kept in threaded connection with the proximal end 102 of the suction plug in the pushing process, and after being pushed in place, the pushing structure 3 and the proximal end 102 of the suction plug can be separated by rotating the pushing structure 3, so that the pushing structure 3 is conveniently pulled out of a tube cavity.

Preferably, the suction plug head 1 is a woven structure woven by metal wires, and the surface of the distal end 101 of the suction plug is provided with a coating.

Preferably, in the free state, the proximal end 102 and the distal end 101 of the suction plug have the same braiding angle, so that the suction plug head 1 has good flexibility as a whole and is easier to convey in a tortuous blood vessel.

The working process of the invention comprises the following steps:

in the working process of the separated type thrombus absorbing device, the thrombus absorbing head 1 can be matched with a common catheter 2, the thrombus absorbing head 1 is arranged at the far end of a tube cavity of the catheter 2, a pushing structure 3 can be slidably arranged in the tube cavity, the far end of the pushing structure 3 is abutted against the near end 102 of the thrombus absorbing head, in the delivery state, the thrombus absorbing head 1 is contained at the far end of the tube cavity, when the separated type thrombus absorbing device is delivered to a proper position, the thrombus absorbing head 1 is pushed to the far end direction through the pushing structure 3 until the far end 101 of the thrombus absorbing head is released out of the tube cavity, the near end 102 of the thrombus absorbing head is limited at the far end of the tube cavity, the far end 101 of the thrombus absorbing head is expanded radially or is opened in an auxiliary mode through traction/sacculus and the like, so that the thrombus absorbing device can be attached to the inner wall of a blood vessel to block, thrombus absorbing can be directly carried out through the cooperation of the tube cavity and various auxiliary thrombus absorbing devices can be introduced into the tube cavity.

The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.

Claims

1. The utility model provides a disconnect-type is inhaled and is tied device, includes and inhales bolt head (1) and push structure (3), its characterized in that: the suction plug head (1) comprises a suction plug proximal end (102) and a suction plug distal end (101) which are arranged close to the pushing structure (3) end, wherein the suction plug distal end (101) is of an elastic structure, the outer diameter of the suction plug distal end (101) after radial expansion is larger than the diameter of the suction plug proximal end (102), the suction plug head (1) is in a funnel shape with the diameter gradually reduced from the suction plug distal end (101) to the suction plug proximal end (102) after radial expansion, the distal end of the pushing structure (3) is not fixedly connected with the suction plug proximal end (102), a suction plug cavity which is arranged in the axial direction of the suction plug head (1) is arranged in the suction plug head (1), and the distal end of the pushing structure (3) is detachably connected with the suction plug proximal end (102) through a releasable structure.

2. A breakaway faucet assembly according to claim 1, wherein: the pushing structure (3) is one or a combination of a plurality of pushing rods, springs and hypotubes with bending performance.

3. A breakaway faucet assembly according to claim 3, wherein: the pushing structure (3) further comprises a traction wire (303), and the distal end of the traction wire (303) is fixedly connected with the proximal end (102) of the suction plug.

4. A breakaway faucet assembly according to claim 3, wherein: the distal end of the pushing structure (3) is provided with a supporting block (301) which is in interference fit with the proximal end (102) of the suction bolt.

5. A breakaway faucet assembly according to claim 1, wherein: the proximal end (102) of the suction plug has a tendency to expand gradually outwardly from the distal end to the proximal end.

6. A breakaway faucet assembly according to claim 1, wherein: the suction plug head (1) is of a woven structure woven by metal wires, and a coating film is arranged on the surface of the distal end (101) of the suction plug.

7. A breakaway faucet assembly as defined in claim 6 wherein: in the free state, the proximal end (102) of the suction plug and the distal end (101) of the suction plug have the same braiding angle.

8. A breakaway faucet assembly according to claim 1, wherein: the detachable structure is in threaded connection, and the outer wall of the distal end of the pushing structure (3) and the inner wall of the proximal end (102) of the suction bolt are respectively provided with mutually meshed threads.