Thrombus suction separator and thrombus suction device

Abstract

The utility model provides a thrombus suction separator and a thrombus suction device, and relates to the technical field of medical instruments. The thrombus aspiration separator comprises a core wire which is arranged in the thrombus aspiration catheter in a penetrating mode, the near end of the core wire is an operation end, and the far end of the core wire is a leading-in end. The developing wrapping part correspondingly wraps the far end of the core wire; the protective sleeve correspondingly sleeves the far end of the core wire and is positioned on one side of the near end of the developing coating piece; the separation ball head is correspondingly arranged at the joint of the protective sleeve and the developing coating piece in a sleeving manner; the periphery of the inner side of the separation ball head is of a cavity structure, cutting nets are correspondingly arranged on the periphery of the inner side of the separation ball head, and conical cutting parts are correspondingly arranged on the two sides of the separation ball head. According to the thrombus suction device, large thrombus can be smoothly cut and broken, suction is facilitated, thrombus blocked in blood vessels can be effectively cleaned, and the thrombus suction device is simple and ingenious in overall design, flexible and convenient to use and high in practicability.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to medical instrument technical field, concretely relates to a thrombus aspiration separator and thrombus aspiration device. BACKGROUND

[0002] Thrombus is the disease caused by abnormal blood clot in human body circulation blood, in order to solve the problem of thrombus blocking blood vessel, the prior art usually uses thrombus aspiration catheter, sends the catheter along the blood vessel to the thrombus site, gives negative pressure, and the thrombus is extracted, so that the blood vessel restores blood flow power.

[0003] However, the prior art has the following disadvantages: when the thrombus aspiration catheter is used to clean the thrombus in the blood vessel, only the flexible and acute thrombus formed for a short time can be directly aspirated, the effect of direct aspiration is poor for the subacute thrombus or even the thrombus that has been calcified for a long time, and in addition, the thrombus formed in the blood vessel of part of patients is too large, and the thrombus blockage phenomenon is likely to occur in the aspiration process, which is not only inconvenient to operate, but also seriously endangers the life of the patient. Therefore, it is particularly important to provide an instrument capable of aspirating large and hard thrombus without affecting the state of blood flow, so as to reduce the risk of operation. In view of this, we provide a thrombus aspiration separator and thrombus aspiration device.

[0004] It should be noted that the above content belongs to the technical cognition range of the inventor, and due to the vast and complex technical content in the art, the above content of the present application does not necessarily constitute the prior art. CONTENT OF THE UTILITY MODEL

[0005] 1. Technical problem to be solved by the utility model:

[0006] The utility model provides a thrombus aspiration separator and thrombus aspiration device to solve the technical problems in the above background art.

[0007] 2. Technical scheme:

[0008] In order to achieve the above purpose, the technical scheme provided by the utility model is as follows: a thrombus aspiration separator of the utility model comprises

[0009] The core wire is arranged in the thrombus aspiration catheter, the proximal end of the core wire is an operating end, and the distal end of the core wire is a lead-in end.

[0010] The developing covering member is correspondingly wrapped around the distal end of the core wire.

[0011] The protective sleeve is correspondingly sleeved on the distal end of the core wire and located on the proximal end side of the developing covering member.

[0012] The separation ball head is correspondingly sleeved at the joint of the protective sleeve and the developing cover; the inner side of the separation ball head is provided with a cavity structure, and a cutting net is correspondingly arranged on the inner side of the separation ball head; and the two sides of the separation ball head are correspondingly provided with tapered cutting portions.

[0013] Further, the cutting net comprises a plurality of cutting pieces which are uniformly distributed in the separation ball head.

[0014] Further, the tapered cutting portions comprise a plurality of tapered cutting pieces which can be straight or helical arc, and the plurality of tapered cutting pieces are uniformly distributed in a ring shape.

[0015] Further, the separation ball head is made of TPU material, and a plurality of strip-shaped grooves are uniformly distributed on the spherical surface of the separation ball head.

[0016] Further, the core wire is made of a nickel-titanium metal wire, and the diameter of the core wire gradually decreases from the proximal end to the distal end.

[0017] Further, the developing cover comprises an outer spring, a protection ball head and an inner spring, the protection ball head is correspondingly installed on the distal end head of the core wire, the outer spring is correspondingly wrapped and installed on the distal end of the core wire, and the inner spring is correspondingly wrapped and installed between the outer spring and the core wire.

[0018] Further, the outer spring is made of a developing wire made of platinum-tungsten alloy and wound into a spring; and the inner spring is made of a nickel-titanium metal wire wound into a spring.

[0019] Further, the protective sleeve is made of a PA tube, and the separation ball head is correspondingly wrapped on one side of the distal end of the protective sleeve and one side of the proximal end of the developing cover.

[0020] The utility model discloses a kind of thrombus suction devices, including the above thrombus suction separator, still include thrombus suction catheter, the thrombus suction separator is arranged in thrombus suction catheter, Y type hemostatic valve is correspondingly installed on the proximal end of the thrombus suction catheter;The proximal end of the thrombus suction catheter is connected with suction extension pipe by luer joint, stress diffusion pipe is correspondingly sleeved on the proximal end outside of the thrombus suction catheter, the suction extension pipe is connected vacuum collection tank, vacuum collection tank is correspondingly installed with negative pressure suction pump.

[0021] 3. Beneficial effects:

[0022] Compared with prior art, the technical scheme has the following beneficial effects:

[0023] The utility model discloses a reasonable design, through setting up the separation ball head of high molecule material on the core silk, the conical cutting piece of a plurality of straight or spiral arc shape is arranged on the both sides of separation ball head ring, is used to form the conical cutting part, and sets up a plurality of annular distribution cutting piece for forming cutting net in the inside of separation ball head, when using in clinic, the core silk is in thrombus suction catheter and does reciprocating push and pull movement, and also can rotate around the axle when pushing and pulling, through the cutting net in separation ball head and the conical cutting part of spiral or straight on both sides thereof to the rotary grinding or transverse cutting of thrombus, cut the larger thrombus and break, convenient for sucking, thereby effectively cleaning the thrombus of blocked in blood vessel, and the arc ball structure of separation ball head also preferably avoided the destruction of patient's blood vessel inner wall when moving in blood vessel, and the whole design is simple and ingenious, and the use is flexible and convenient, and the practicality is strong.

[0024] It should be noted that the structures not introduced in the utility model are the same as the prior art or can be realized by using the prior art, and do not need to be repeated here, since they do not involve the design points and improvement direction of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structure schematic view of the thrombus suction separator of the utility model;

[0026] Figure 2 It is another structure schematic view of the thrombus suction separator of the utility model;

[0027] Figure 3 It is an axial sectional view schematic view of the thrombus suction separator of the utility model;

[0028] Figure 4 It is a sectional view schematic view of the thrombus suction separator of the utility model;

[0029] Figure 5 It is a structure schematic view of the thrombus suction separator of the utility model, and a strip-shaped groove is arranged on the separation ball head;

[0030] Figure 6 It is a structure schematic view of the thrombus suction device of the utility model.

[0031] REFERENCE SIGNS:

[0032] 1, protective sleeve; 2, separation ball head; 201, conical cutting part; 202, cutting net; 203, strip-shaped groove; 3, outer spring; 4, protection ball head; 5, inner spring; 6, core silk; 7, thrombus suction catheter; 8, luer joint; 9, stress diffusion pipe; 10, suction extension pipe. DETAILED DESCRIPTION

[0033] For the convenience of understanding the utility model, the utility model will be described more fully below with reference to the relevant drawings, the drawings show several embodiments of the utility model, however, the utility model can be realized in many different forms, and is not limited to the embodiments described herein, on the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0034] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0035] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0036] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing", "provided with", "provided in" and other terms should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. Embodiment 1

[0037] Referring to the drawings Figures 1 to 5 , the thrombus aspiration separator of the embodiment comprises

[0038] The core wire 6 is arranged in the thrombus aspiration catheter 7, the proximal end of the core wire 6 is an operating end, and the distal end of the core wire 6 is a leading end;

[0039] The developing covering member is correspondingly wrapped at the distal end of the core wire 6;

[0040] The protective sleeve 1 is correspondingly sleeved at the distal end of the core wire 6 and located at the proximal end side of the developing covering member;

[0041] The separation ball head 2 is fitted onto the connection between the protective sleeve 1 and the developing cover; the inner periphery of the separation ball head 2 is a cavity structure that runs through both ends, and the inner periphery of the separation ball head 2 is provided with a cutting mesh 202, and the two sides of the separation ball head 2 are provided with conical cutting parts 201.

[0042] The core wire 6 can be made of nickel-titanium metal wire, and the diameter of the core wire 6 gradually decreases from the proximal end to the distal end.

[0043] like Figure 3 As shown, the developing coating includes an outer spring 3, a protective ball head 4, and an inner spring 5. The protective ball head 4 is correspondingly installed at the distal end of the core wire 6. The outer spring 3 is correspondingly installed and wrapped around the distal end of the core wire 6. The inner spring 5 is correspondingly installed and wrapped around the space between the outer spring 3 and the core wire 6. The outer spring 3 is made of a thinner platinum-tungsten alloy developing wire wound into a spring. The inner spring 5 is made of nickel-titanium metal wire wound into a spring. The rotation direction of the outer spring 3 and the inner spring 5 can be the same or opposite.

[0044] The protective sleeve 1 is made of PA tube, and the separation ball head 2 is wrapped around the distal side of the protective sleeve 1 and the proximal side of the developing cover.

[0045] like Figure 4 As shown, the cutting mesh 202 of the separating ball head 2 includes multiple cutting blades. These cutting blades can be arc-shaped structures that fit and connect with the inner and outer walls of the separating ball head 2. The multiple cutting blades are evenly distributed in a ring within the separating ball head 2. The conical cutting section 201 of the separating ball head 2 includes multiple conical cutting blades. These conical cutting blades can be straight, such as... Figure 1 As shown, the conical cutting blade can also be in a spiral arc shape, such as... Figure 2 As shown, multiple conical cutting blades are evenly distributed in a ring.

[0046] The separation ball head 2 can be a sphere or an ellipsoid, as long as it can move within the blood vessel without damaging the inner wall of the vessel. The cutting mesh 202 and the tapered cutting portions 201 on both sides can be integrally formed with the separation ball head 2 body, and the separation ball head 2 as a whole can be made of TPU material.

[0047] The distal end of this thrombus aspiration separator is coated with a hydrophilic material, and its length can be set to approximately 195 mm. In clinical use, the core wire 6 can rotate axially within the thrombus aspiration catheter 7, or reciprocate axially within the catheter 7. The thrombus is abraded or transversely cut by the cutting mesh 202 within the separation head 2 and its spiral or straight conical cutting sections 201 on both sides, thus breaking up the thrombus for aspiration. It is worth noting that, as... Figure 5As shown, the spherical surface of the separation ball head 2 can also be uniformly distributed with a plurality of strip-shaped grooves 203 in a ring shape, so as to further improve the thrombus breaking effect; the corners of the groove walls of the strip-shaped grooves 203 can be flexibly rounded, so as to avoid damage to the inner wall of the blood vessel. Embodiment 2

[0048] Referring to the drawings Figure 6 The thrombus aspiration device of the embodiment comprises the thrombus aspiration separator of Embodiment 1, and further comprises a thrombus aspiration catheter 7, wherein the thrombus aspiration separator is arranged in the thrombus aspiration catheter 7. The thrombus aspiration catheter 7 is introduced into the blood vessel to contact the thrombus, and is used to aspirate the thrombus. The thrombus aspiration separator repeatedly enters and exits the tip of the thrombus aspiration catheter 7 to clean the blocked thrombus in the blood vessel, and ensure smooth aspiration. The proximal end of the thrombus aspiration catheter 7 is connected to an aspiration extension tube 10 through a luer joint 8. A stress dispersion tube 9 is correspondingly sleeved on the outside of the proximal end of the thrombus aspiration catheter 7, and the stress dispersion tube 9 is correspondingly arranged on one side of the luer joint 8. The aspiration extension tube 10 is correspondingly connected to a vacuum collection tank, and a negative pressure suction pump is correspondingly arranged on the vacuum collection tank. The stable suction force is generated in the vacuum collection tank through the negative pressure suction pump, and is used to aspirate the thrombus.

[0049] A Y-shaped hemostatic valve is correspondingly arranged on the proximal end of the thrombus aspiration catheter 7. A developing mark is correspondingly arranged on the tip of the thrombus aspiration catheter 7 on one side of the distal end, so that the separation ball head 2 can be developed under the irradiation of X-rays, and the doctor can separate and break the thrombus. The developing material can be barium sulfate or tungsten powder. The specific selection and addition ratio of the developing material are selected according to the material of the separation ball head 2 and the actual situation of the patient, and are not limited in particular. A hydrophilic coating can be arranged on the distal end of the thrombus aspiration catheter 7, and the length thereof can be about 78 mm.

[0050] The steps in clinical use are as follows:

[0051] I. Pre-vacuum: Before the operation starts, the negative pressure suction pump is connected to the vacuum collection tank, and the air in the collection tank is first exhausted to form a stable vacuum environment. The vacuum tank provides a gentle and continuous negative pressure through the set suction force, so as to avoid damage to the blood vessel caused by strong suction force.

[0052] II. Thrombus aspiration catheter 7 enters the blood vessel: After the doctor punctures the blood vessel, the thrombus aspiration catheter 7 is pushed to the position of the thrombus to ensure that the catheter tip directly contacts the thrombus.

[0053] III. Negative pressure suction begins: Thrombus suction catheter 7 is connected to a Y-shaped hemostatic valve and through a suction extension tube 10 to a vacuum collection tank, and the switch is kept in the closed state. When the negative pressure is opened, the thrombus and the surrounding blood are sucked into the catheter. The vacuum suction force during suction comes from the vacuum environment of the collection tank, which ensures that the suction process is gentle and stable.

[0054] IV. Thrombus suction separator repeated push-pull operation: During the thrombus suction process, thrombus may accumulate at the tip of the thrombus suction catheter 7, affecting the suction force. Therefore, the thrombus suction separator inside the thrombus suction catheter 7 is operated by the operator to push and pull back and forth, and when pushing and pulling, it can also rotate around the shaft, breaking larger thrombus, facilitating the suction into the catheter, and cleaning the blocked thrombus through its mechanical action.

[0055] V. Continuous monitoring and suction adjustment: The doctor can also adjust the position of the thrombus suction catheter 7 or the negative pressure intensity according to the suction effect through the pressure monitoring system to view the negative pressure state, and ensure that the thrombus is completely removed.

[0056] The above-described embodiments only express certain embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the present application; It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application; Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A thrombus aspiration separator, characterized by: The utility model relates to a thrombus suction separator, including a core wire (6) arranged in a thrombus suction catheter (7), a proximal end of the core wire (6) being an operation end, and a distal end of the core wire (6) being an introduction end; a developing cover member corresponding to the distal end of the core wire (6); a protective sleeve (1) corresponding to the distal end of the core wire (6) and located on a proximal end side of the developing cover member; a separation ball head (2) corresponding to the connection between the protective sleeve (1) and the developing cover member; the inner side of the separation ball head (2) is a cavity structure, the inner side of the separation ball head (2) is provided with a cutting net (202) corresponding to the inner side, and both sides of the separation ball head (2) are provided with a tapered cutting part (201) corresponding to the both sides.

2. A thrombus suction separator according to claim 1, characterized in that: The cutting net (202) includes a plurality of cutting pieces, and the plurality of cutting pieces are uniformly distributed in a ring shape in the separation ball head (2).

3. The thrombus suction separator according to claim 1, characterized in that: The tapered cutting part (201) includes a plurality of tapered cutting pieces, the tapered cutting pieces can be in a straight shape or a spiral arc shape, and the plurality of tapered cutting pieces are uniformly distributed in a ring shape.

4. The thrombus suction separator according to claim 1, characterized in that: The separation ball head (2) is made of TPU, and a plurality of strip-shaped grooves (203) are uniformly distributed in a ring shape on the spherical surface of the separation ball head (2).

5. A thrombus suction separator according to any one of claims 1-4, characterized in that: The core wire (6) is made of a nickel-titanium metal wire, and the diameter of the core wire (6) gradually decreases from the proximal end to the distal end.

6. A thrombus aspiration separator according to any one of claims 1-4, characterized in that: The developing cover member includes an outer spring (3), a protective ball head (4), and an inner spring (5), the protective ball head (4) is correspondingly installed on the distal end of the core wire (6), the outer spring (3) is correspondingly wrapped and installed on the distal end of the core wire (6), and the inner spring (5) is correspondingly wrapped and installed between the outer spring (3) and the core wire (6).

7. A thrombus suction separator according to claim 6, characterized in that: The outer spring (3) is made of a developing wire made of a platinum-tungsten alloy and wound into a spring; and the inner spring (5) is made of a nickel-titanium metal wire wound into a spring.

8. A thrombus aspiration separator according to any one of claims 1-4, characterized in that: The protective sleeve (1) is made of a PA tube, and the separation ball head (2) is correspondingly wrapped on a distal end side of the protective sleeve (1) and a proximal end side of the developing cover member.

9. A thrombus aspiration device comprising the thrombus aspiration separator of any one of claims 1-8, characterized by: The utility model further includes a thrombus suction catheter (7), the thrombus suction separator is arranged in the thrombus suction catheter (7), a Y-shaped hemostatic valve is correspondingly installed on the proximal end of the thrombus suction catheter (7), the proximal end of the thrombus suction catheter (7) is connected with a suction extension tube (10) through a luer joint (8), a stress diffusion tube (9) is correspondingly sleeved on the outer side of the proximal end of the thrombus suction catheter (7), the suction extension tube (10) is correspondingly connected with a vacuum collection tank, and a negative pressure suction pump is correspondingly installed on the vacuum collection tank.

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