CN114869403A - Device is arrested to intracardiac thrombus - Google Patents
Device is arrested to intracardiac thrombus Download PDFInfo
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- CN114869403A CN114869403A CN202210313293.3A CN202210313293A CN114869403A CN 114869403 A CN114869403 A CN 114869403A CN 202210313293 A CN202210313293 A CN 202210313293A CN 114869403 A CN114869403 A CN 114869403A
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- sheath
- catheter
- handle
- guide wire
- far end
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/22031—Gripping instruments, e.g. forceps, for removing or smashing calculi
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/22031—Gripping instruments, e.g. forceps, for removing or smashing calculi
- A61B2017/22035—Gripping instruments, e.g. forceps, for removing or smashing calculi for retrieving or repositioning foreign objects
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- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
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- Surgical Instruments (AREA)
Abstract
The invention discloses a device for capturing thrombus in a heart cavity, which belongs to the field of medical instruments and comprises a hard sheath, an adjustable sheath and a capturing device; the hard sheath tube is in a straight structure; the adjustable sheath tube comprises a soft sheath tube and an adjustable handle, and the far end of the soft sheath tube extends out of the far end of the hard sheath tube; the catcher comprises an operating handle, a catheter, a guide wire and a claw clamp, wherein the operating handle is positioned outside one side of the near end of the adjustable sheath, the near end of the catheter is arranged on the handle body part of the operating handle, the far end of the catheter penetrates from the near end of the adjustable sheath and then extends out of one side of the far end of the flexible sheath, the near end of the guide wire is fixedly connected to the operating part of the operating handle, the far end of the guide wire penetrates from the near end of the catheter and then extends out of the far end of the catheter, and the claw clamp is connected to one side of the far end of the guide wire; the state of the claw clamp is switched from normally open to closed in response to the catching action of the operating part transmitted through the guide wire. The invention has simple structure and reasonable design, and can flexibly adjust the capturing direction of the capturing device, thereby efficiently performing the operation.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a device for catching thrombus in a heart cavity.
Background
When a thrombus is formed in the heart chamber, if the thrombus is not cleared in time, the thrombus obstructs blood flow in the heart chamber, thereby causing a series of diseases.
For the treatment of thrombus in the heart cavity, one current mode is to remove the thrombus in the heart cavity through an operation scalpel, but the mode not only causes great trauma to the human body, but also has great operation risk.
The other mode is a minimally invasive surgery treatment, which is to firstly use a sheath tube to convey the thrombus into a heart cavity through veins, then extend the claws of the catcher into the sheath tube, and use the catcher to grab the thrombus out of the heart cavity under the guidance of the sheath tube. However, in this way, after the claws at the front end of the catcher are inserted into the heart chamber, the claws cannot always face the thrombus, and the orientation of the claws cannot be adjusted during use of the catcher; in addition, since the sheath tube is usually made of hard material, and is usually straight and inflexible, the sheath tube can only rotate around the shaft, but the orientation of the claws of the catcher is still difficult to adjust to a desired position, which results in great difficulty and long duration of the operation.
Disclosure of Invention
Aiming at the problem that the orientation of the claws of the catcher in the heart chamber thrombus removal operation in the prior art is difficult to adjust, the invention aims to provide the heart chamber thrombus catching device.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a device for catching thrombus in a heart cavity comprises a hard sheath, an adjustable sheath and a catcher;
the hard sheath tube is in a straight structure; the adjustable sheath comprises a soft sheath and an adjusting handle for controlling the bending of the soft sheath, and the far end of the soft sheath penetrates through the near end of the hard sheath and then extends out of the far end of the hard sheath;
the catcher comprises an operating handle, a catheter, a guide wire and a claw clamp, wherein the operating handle is positioned outside one side of the near end of the adjustable sheath tube, the near end of the catheter is arranged on the handle body part of the operating handle, the far end of the catheter penetrates from the near end of the adjustable sheath tube and then extends out to one side of the far end of the flexible sheath tube, the near end of the guide wire is fixedly connected to the operating part of the operating handle, the far end of the guide wire penetrates from the near end of the catheter and then extends out of the far end of the catheter, and the claw clamp is connected to one side of the far end of the guide wire; wherein the state of the claw forceps is switched from normally open to closed in response to a catching motion of the operating portion transmitted through the guide wire.
Preferably, the operating portion is pivotally connected to the handle portion by a pivot, the guide wire is fixed to the operating portion, and the guide wire is retracted from the catheter by a rotating action of the pivot when the operating portion approaches the handle portion.
Furthermore, a handle body part of the operating handle is provided with a limiting device for keeping the operating part in a catching motion.
Preferably, the limiting device comprises a limiting buckle with one end pivotally connected to the handle body, wherein a clamping groove matched with the operating part is formed in the limiting buckle.
Preferably, the claw clamp comprises a clamp body and at least two claws; the forceps body is fixedly arranged at the far end of the guide pipe, at least two jaws are circumferentially and uniformly distributed around the axis of the forceps body, and an elastic component used for enabling the jaws to maintain a normally open state is connected between each jaw and the forceps body.
Preferably, the diameter of the claw clamp is 1.5-2 mm.
Preferably, the soft sheath and the catheter are both provided with length scales.
By adopting the technical scheme, the invention has the beneficial effects that: the adjustable sheath tube is arranged between the hard sheath tube and the catcher, so that the orientation of the distal part of the soft sheath tube extending out of the hard sheath tube can be changed through the operation of the adjustable sheath tube, the direction of the claw of the catcher is changed, and the orientation of the claw of the catcher can be controlled to face any specified direction by combining the pivoting motion of the hard sheath tube, so that thrombus in a heart cavity can be quickly aligned and caught in advance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of the curved structure of the adjustable and controllable sheath according to the present invention;
fig. 4 is a schematic diagram of the present invention.
In the figure, 1-hard sheath, 2-adjustable sheath, 21-soft sheath, 22-adjustable handle, 3-catcher, 31-operating handle, 311-handle, 312-operating part, 32-catheter, 33-guide wire, 34-claw clamp, 35-elastic part, 341-clamp, 342-claw and 4-position limiter.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on structures shown in the drawings, and are only used for convenience in describing the present invention, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the technical scheme, the terms "first" and "second" are only used for referring to the same or similar structures or corresponding structures with similar functions, and are not used for ranking the importance of the structures, or comparing the sizes or other meanings.
In addition, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, e.g., the connection may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two structures can be directly connected or indirectly connected through an intermediate medium, and the two structures can be communicated with each other. To those skilled in the art, the specific meanings of the above terms in the present invention can be understood in light of the present general concepts, in connection with the specific context of the scheme.
Example one
A device for catching thrombus in a heart chamber is shown in figures 1 and 2 and comprises a hard sheath tube 1, an adjustable sheath tube 2 and a catcher 3.
The hard sheath 1 is made of hard material, such as medical plastic, and is configured in a straight or nearly straight structure, and the bending range is limited, and the hard sheath 1 mainly plays a role of supporting and maintaining the internal hollow structure to be stable.
The adjustable and controllable sheath 2 comprises a soft sheath 21 and an adjusting and controlling handle 22 connected with the soft sheath 21 and used for controlling the bending of the soft sheath 21, and a through hole connected with the soft sheath 21 is formed in the adjusting and controlling handle 22 so that other devices can penetrate through the through hole. Wherein, the distal end of the soft sheath 21 penetrates from the proximal side of the hard sheath 1 and then extends out of the distal end of the hard sheath 1, for example, the length of the part of the soft sheath 21 extending out of the hard sheath 1 is 40-50 mm.
The catcher 3 comprises an operating handle 31, a catheter 32, a guide wire 33 and a claw grip 34. The operation handle 31 includes a handle portion 311 and an operation portion 312 pivotally connected to the handle portion 311, and the operation handle 31 is located outside the proximal end side of the adjustable sheath 2. The proximal end of the catheter 32 is fixedly mounted on the handle portion 311, and the distal end thereof penetrates through the proximal end side of the adjustable sheath 2 and then extends out of the distal end of the flexible sheath 21. The proximal end of the guide wire 33 is fixedly connected to the operation portion 312, and the distal end thereof extends out of the distal end of the catheter 32 after penetrating through the proximal end of the catheter 32. The jaw 34 is attached to the distal side of the guide wire 33. In response to the catching motion of the operation portion 312 transmitted through the guide wire 33, the state of the forceps 34 is switched from the normally open state to the closed state.
For example, in the present embodiment, the upper end of the operating portion 312 is pivotally connected to the upper end of the handle portion 311, and when the lower end of the operating portion 312 is close to the handle portion 311, the guide wire 33 is partially pulled out of the catheter 32, so that an arc-shaped guide groove centered on the pivot is provided on the operating portion 312, and the guide wire 33 is positioned in the arc-shaped guide groove and fixed, so that when the operating portion 312 rotates, the arc-shaped guide groove also rotates around the pivot, and the corresponding guide wire 33 also rotates, thereby pulling more guide wire 33 out of the catheter 32.
The claw grip 34 comprises a grip body 341 and at least two jaws 342, for example two. The forceps body 341 is fixedly mounted at the distal end of the catheter 32, the middle parts of the two jaws 342 are hinged to each other through a pin to form a scissor-like shape, wherein the pin is mounted on the forceps body 341, the proximal ends of the two jaws 342 pass through the forceps body 341 and then are located in the catheter 32, and the distal ends of the two jaws 342 are located outside the catheter 32. The proximal ends of the two claws 342 are connected with the guide wire 33 through wires, so that when the guide wire 33 is pulled, the proximal ends of the two claws 342 are driven to be folded, and the distal ends of the two claws 342 are simultaneously folded, thereby catching thrombus. Meanwhile, an elastic member 35, such as a torsion spring, for maintaining the jaw in a normally open state is connected between the jaw 342 and the jaw body 341, and is wound around a fixing rod of the jaw body 341, and both ends of the torsion spring are connected to the two jaws 342. It will be appreciated that when there are three or more jaws 342, each jaw 342 is circumferentially and uniformly distributed around the axis of the caliper body 341, and the elastic member 35 is provided as a tension spring.
When in use, the hard sheath 1 is firstly penetrated from the vein, and the far end of the hard sheath 1 is sent into the heart cavity; then the soft sheath 21 of the adjustable sheath 2 is inserted from the proximal end of the hard sheath 2, and the distal end of the soft sheath 21 is exposed from the distal end of the hard sheath 1 by a certain length, for example, 40-50mm, but may be other length dimensions; then the distal end 32 of the catheter in the catcher 3 and the claws 34 are penetrated together from the proximal end of the adjustable sheath 2 until the claws 34 are exposed from the distal end of the flexible sheath 21; as shown in fig. 3 and 4, after the hard sheath 1 is rotated and the control handle 22 of the controllable sheath 2 is operated to change the orientation of the forceps 34 so as to align the forceps with the thrombus, the forceps 34 are closed by the operation portion 312 to grasp the thrombus, and the grasper 3 is pulled to withdraw the forceps 34 from the soft sheath 21, thereby completing the thrombus removal operation in the heart chamber.
It is to be understood that, in order to determine the length of the distal end of the soft sheath 21 extending from the hard sheath 1 and the length of the claw 34 extending from the soft sheath 21, in another preferred embodiment, length scales are provided on both the soft sheath 21 and the catheter 32.
It can be understood that, since there is a certain resistance between the thrombus and the soft sheath 21 during the process of being grasped from the soft sheath 21, in order to prevent the forceps 34 from being pulled apart, the diameter of the forceps 34 is configured to be 1.5-2mm in this embodiment, so that the forceps 34 has a relatively large size, and the forceps body 341 and the jaws 342 therein can have higher structural strength.
Example two
In this embodiment, the handle body 311 is provided with a stopper 4 for maintaining the operation of the operation unit 312. For example, the stopper 4 is configured as a stopper buckle integrally formed on the handle body 311, and a locking groove adapted to the operation portion 312 is provided on the stopper buckle, and an opening of the locking groove faces the operation portion 312. The limiting buckle is made of a material with elastic deformation capacity, such as plastic, the shape and size of the inner side wall of the clamping groove are respectively matched with the shape and size of the cross section of the operating part 312, the width of the opening of the clamping groove is smaller than the size of the cross section of the operating part 312, so that the operating part 312 is not easy to fall off after being clamped into the clamping groove under the action of external force, and when the operating part 312 rotates to the position for catching, the operating part 312 is just clamped into the clamping groove of the limiting buckle.
Or in other preferred embodiments, the limiting device 4 is configured as a limiting buckle with one end pivotally connected to the handle part 311, wherein the rotation axis of the limiting buckle is perpendicular to the rotation axis of the operating part 312, so that the limiting buckle can quickly limit the operating part 312, and the size of the limiting buckle can be reduced as much as possible.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (7)
1. The utility model provides a device is arrested to thrombus in heart chamber which characterized in that: comprises a hard sheath, an adjustable sheath and a catcher;
the hard sheath tube is in a straight structure; the adjustable sheath comprises a soft sheath and an adjusting handle for controlling the bending of the soft sheath, and the far end of the soft sheath penetrates through the near end of the hard sheath and then extends out of the far end of the hard sheath;
the catcher comprises an operating handle, a catheter, a guide wire and a claw clamp, wherein the operating handle is positioned outside one side of the near end of the adjustable sheath tube, the near end of the catheter is arranged on the handle body part of the operating handle, the far end of the catheter penetrates from the near end of the adjustable sheath tube and then extends out to one side of the far end of the flexible sheath tube, the near end of the guide wire is fixedly connected to the operating part of the operating handle, the far end of the guide wire penetrates from the near end of the catheter and then extends out of the far end of the catheter, and the claw clamp is connected to one side of the far end of the guide wire; wherein the state of the claw forceps is switched from normally open to closed in response to a catching motion of the operating portion transmitted through the guide wire.
2. The intracardiac thrombus capture device according to claim 1, characterized in that: the operating part is pivotally connected to the handle part through a pivot, the guide wire is fixed on the operating part, and when the operating part is close to the handle part, the guide wire is retracted from the catheter along with the rotating action of the pivot.
3. The intracardiac thrombus capture device according to claim 2, characterized in that: and the handle body part of the operating handle is provided with a limiting device for keeping the operating part in a catching motion.
4. The intracardiac thrombus capture device according to claim 3, characterized in that: the limiting device comprises a limiting buckle with one end pivotally connected to the handle body, wherein a clamping groove matched with the operating part is formed in the limiting buckle.
5. The intracardiac thrombus capture device according to claim 1, characterized in that: the claw comprises a clamp body and at least two claws; the forceps body is fixedly arranged at the far end of the guide pipe, at least two jaws are circumferentially and uniformly distributed around the axis of the forceps body, and an elastic component used for enabling the jaws to maintain a normally open state is connected between each jaw and the forceps body.
6. The intracardiac thrombus capture device according to claim 5, characterized in that: the diameter of the claw clamp is 1.5-2 mm.
7. The intracardiac thrombus capture device according to claim 1, characterized in that: the soft sheath tube and the catheter are provided with length scales.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210313293.3A CN114869403A (en) | 2022-03-28 | 2022-03-28 | Device is arrested to intracardiac thrombus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210313293.3A CN114869403A (en) | 2022-03-28 | 2022-03-28 | Device is arrested to intracardiac thrombus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114869403A true CN114869403A (en) | 2022-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210313293.3A Pending CN114869403A (en) | 2022-03-28 | 2022-03-28 | Device is arrested to intracardiac thrombus |
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| CN (1) | CN114869403A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117426836A (en) * | 2023-12-21 | 2024-01-23 | 中国人民解放军总医院第六医学中心 | Coronary artery direct perfusion head in minimally invasive heart surgery |
-
2022
- 2022-03-28 CN CN202210313293.3A patent/CN114869403A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117426836A (en) * | 2023-12-21 | 2024-01-23 | 中国人民解放军总医院第六医学中心 | Coronary artery direct perfusion head in minimally invasive heart surgery |
| CN117426836B (en) * | 2023-12-21 | 2024-04-02 | 中国人民解放军总医院第六医学中心 | Coronary artery direct perfusion head in minimally invasive heart surgery |
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Inventor after: Ning Zhongping Inventor after: Sun Hongxia Inventor after: Wu Yingbiao Inventor before: Ning Zhongping |