CN213641107U - Rotary cutter, catheter structure for loading rotary cutter and rotary cutting device - Google Patents
Rotary cutter, catheter structure for loading rotary cutter and rotary cutting device Download PDFInfo
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- CN213641107U CN213641107U CN202022052376.0U CN202022052376U CN213641107U CN 213641107 U CN213641107 U CN 213641107U CN 202022052376 U CN202022052376 U CN 202022052376U CN 213641107 U CN213641107 U CN 213641107U
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Abstract
The utility model discloses a rotary-cut ware, pipe structure and rotary-cut device for dredging vascular blockage belongs to the medical instrument field. The rotary cutter is provided with an inner assembly and an outer assembly, wherein the inner assembly is provided with a rotary cutting ring layer consisting of a plurality of rotary cutting blades and a plurality of adsorption ports; the catheter structure is provided with a clamping structure for clamping the rotary cutter so as to be convenient for clamping and fixing the rotary cutter during working; the atherectomy device has an atherectomy device, a catheter structure, and a guidewire. The application discloses rotary cutter and rotary-cut device carries out the rotary-cut formula excision to the thrombus through the rotary-cut blade of rotary cutter to adsorb away clot and impurity through the pipe, ensured the security of operation, made things convenient for operator's use, thereby improved the clearance efficiency and the cure rate of thrombus.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to a pipe structure and rotary-cut device that is used for dredging vascular blockage rotary-cut ware, loads this rotary-cut ware.
Background
At present, the known methods for treating vascular occlusion are mainly to restore the patency of blood vessels by antithrombotic drugs or artificial mechanical methods. The antithrombotic therapy is to dissolve the formed thrombus by using thrombolytic drugs and then prevent new thrombus from forming in arteries and veins by using antiplatelet drugs and anticoagulants; the artificial mechanical method mainly adopts a balloon catheter to expand the blood vessel at the blocked part, so that the reduced inner diameter of the blood vessel is recovered to the inner diameter of a normal blood vessel or is a little smaller than the normal inner diameter, and according to different conditions of patients, a stent is placed in the blood vessel according to the different requirements, namely the inner diameter of the blood vessel at the pathological change part is expanded (continuously provides acting force for the blood vessel).
However, the above two methods have certain limitations in treatment, cannot satisfy various crowds, and cannot achieve the expected treatment effect in the case of severe and different symptom vascular blockage, thereby affecting the treatment of patients
Based on the above, there is a need to provide an additional solution to the technical problem, and it should be understood that the above information disclosed in the background is only for enhancing the understanding of the background of the present invention, and thus it may contain information that does not form the prior art that is known to those of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a rotary-cut ware for mediation vascular blockage to adopt antithrombotic medicine or adopt the technical problem that exists when the artifical mechanical method mediation exists when solving current vascular blockage, try at least to provide a profitable selection.
Based on the same inventive concept, the utility model also provides a catheter structure for loading the rotary cutter and a rotary cutting device with the rotary cutter and the catheter structure.
In order to achieve the above object, the utility model adopts the following technical scheme:
rotary cutter for dredging when blood vessel is blocked, which is characterized by comprising:
an inner component, an outer component; and an intermediate layer located between the inner component and the outer component;
the inner assembly is provided with a rotary cutting ring layer consisting of a plurality of rotary cutting blades;
the middle part of the internal component is provided with a guide wire hole for leading in a guide wire;
the external component is provided with a micro motor for pushing the rotary cutting blade to rotate;
the inner assembly is telescopically arranged in the outer assembly through the middle layer.
In an embodiment of the disclosure, optionally, the rotary-cut loop layer further includes a plurality of adsorption ports, and the adsorption ports are uniformly distributed in a separation area between every two adjacent rotary-cut blades around the guide wire hole, and are used for sucking out blood clots and impurities left after the rotary-cut.
In one embodiment of the disclosure, the suction ports and the rotary cutting blades are alternatively equal in number and are arranged in a staggered manner.
The internal component of the rotary cutter extends outwards from the external component when in work, thereby avoiding unnecessary injury to human body and having low operation risk; the rotary cutting ring layer arranged on the inner component is used for rotary cutting thrombus in the blood vessel, so that the thrombus removing efficiency is high, and the treatment effect is good.
The utility model also discloses a pipe structure of loading rotary-cut ware, include:
a catheter body having a rotational cutter placement region; and
the clamping structure is arranged in the catheter body and used for clamping the rotary cutter;
the retaining structure includes:
an annular table located inside the catheter body and proximate to one end of the catheter body;
a plurality of catches in an annular array about a centerline of the catheter body;
when the rotary cutter is moved to the rotary cutter placing area, the annular table and the plurality of clamping pieces respectively clamp the lower end and the upper end of the rotary cutter to limit the position of the rotary cutter to move.
In one embodiment of the present disclosure, optionally, the retainer has:
one end of the elastic connecting arm is connected with the inner wall of the catheter body;
a holding arm located at the other end of the connecting arm;
wherein the end of the clamping arm is provided with a clamping part; the connecting arm extends towards the center of the guide pipe body in an inclined shape at a preset included angle; the clamping arm is approximately parallel to the central line of the catheter body and extends downwards from the end part of the connecting arm.
In one embodiment of the disclosure, optionally, the elastic coefficient of the connecting arm is greater than the elastic coefficient of the holding arm; the connecting arm is made of a material having unidirectional elastic properties.
The utility model finally also discloses a rotary-cut device, include:
the rotary cutter described above;
the aforementioned catheter structure;
a visualization ring located within the catheter body; and
and the controller is used for controlling the starting or stopping of the rotary cutter.
In one embodiment of the present disclosure, the atherectomy device further comprises a guide wire inserted into the guide wire hole, thereby delivering the atherectomy device to the atherectomy device placement area; the guide wire extends from one end of the catheter body to the other end of the catheter body through the interior of the catheter.
In one embodiment disclosed herein, the first and second electrodes are, optionally,
the catheter body further has a handle formed at one end of the catheter body;
the handle is provided with a guide wire port and an air outlet;
the guide wire port is communicated with the catheter body, and the center of the guide wire port is basically consistent with that of the catheter body; the air outlet is formed in the side face of the handle and communicated with the catheter body. Further, the guide wire is adapted to extend from the guide wire port to the other end of the catheter body through the interior of the catheter body.
The application discloses rotary-cut device carries out the excision of rotary-cut formula to the thrombus through the rotary-cut blade of rotary-cut ware to adsorb away blood clot and impurity through the pipe, ensured the security of operation, made things convenient for operator's use, thereby improved the clearance efficiency and the cure rate of thrombus.
The specific working principle of the rotary cutting device of the present invention is as follows, and the applicant believes that the rotary cutter and the duct structure are also within the scope of understanding by explaining the principle of the rotary cutting device.
1. The rotary cutter enters the lesion position of the blood vessel of the human body through the guide wire;
2. preparing the rotary cutter, and controlling the operation of the rotary cutter through a controller in the handle;
3. after the operation is started, the internal component extends outwards, the rotary cutting blade rotates to carry out rotary cutting on thrombus at the pathological change position, the adsorption port adsorbs broken blood clots into the adsorption port, and the rotary cutting and the adsorption work simultaneously to ensure that the blood clots are completely adsorbed into the adsorption port and restore the smoothness of the blood vessel;
5. after the operation is finished, the rotary cutting device is ensured to stop working completely, foreign matters in the blood vessel are completely adsorbed into the rotary cutter without residue, the blood vessel is ensured to be completely unobstructed, and the rotary cutting device can be taken out.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the arranged internal component extends outwards from the inside of the external component during working, so that unnecessary injury to a human body is avoided, and the surgical risk is low; the rotary cutting ring layer arranged on the internal device is used for rotary cutting thrombus in the blood vessel, so that the thrombus removing efficiency is high, the treatment effect is good, and the thrombus removing efficiency and the cure rate are improved.
2. The adsorption port through the internal component can suck broken blood clots and impurities in time, observation of the miniature camera is facilitated, thrombus clearing efficiency and operation efficiency are improved, and the blood vessel is recovered to be unobstructed.
3. Through the mutual matching of the rotary cutting ring and the adsorption ring, the thrombus removing efficiency and the operation efficiency can be effectively improved, thereby improving the cure rate.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic front structural view of the middle rotary cutter of the present invention;
FIG. 2 is a schematic structural view of the middle rotary cutter of the present invention before operation;
FIG. 3 is a schematic structural view of the rotary cutter of the present invention during operation;
FIG. 4 is a schematic cross-sectional view of the middle retaining structure of the present invention;
fig. 5 is a schematic structural view of the rotary cutting device of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 5, the present application discloses a rotary cutter for dredging blood vessel blockage, a catheter structure for loading the rotary cutter, and a rotary cutter device, which are used to solve the technical problems of the conventional blood vessel blockage caused by using antithrombotic drugs or manual mechanical methods for dredging.
Example one
The whole appearance of the rotary shaver 1 is similar to a cylinder, and the rotary shaver specifically comprises the following parts:
the inner assembly 100 has a rotary cutting ring layer 120 formed by a plurality of rotary cutting blades 121;
the inner member 100 has a guide wire hole 110 at the center for introducing a guide wire (not shown);
the external assembly 200 has a micro-motor (not shown) for driving the rotary cutting blade 121 to rotate;
the inner member 100 is telescopically disposed within the outer member 200 by an intermediate layer 300.
In this embodiment, the outer member 200 is a fixed part, and is connected to the catheter body 3 by a retaining structure on the catheter body 3. The construction of the catheter 3 and the retaining structure will be explained in more detail in the following description. The inner member 100 can rotate and extend relative to the outer member 200 (in an operating state), and the power for rotating the inner member is mainly generated by a micro motor (not shown) fixed on the outer member 200. The power of the extension can come from a second micro motor, and the micro motor converts the rotary power into linear thrust through a worm and gear structure. Fig. 2 and 3 schematically show the state of the inner assembly 100 relative to the outer assembly 200. The partial structure is applied more in the prior art, the telescopic principle of the digital camera lens can be referred to, and the specific structure is not further explained here.
As a preferred structure, the rotary-cut loop layer 120 further includes a plurality of suction ports 122, and the suction ports 122 are uniformly distributed in a spaced area between every two adjacent rotary-cut blades 121 around the guide wire hole 110, and are used for sucking out blood clots and impurities left after the rotary-cut. Through this absorption mouth 122, can in time absorb broken clot and impurity away, be favorable to improving the efficiency of cleaing away of thrombus and operation efficiency, resume the blood vessel unobstructed.
In a preferred configuration, the suction ports 122 and the rotary cutting blades 121 are provided in the same number and are staggered from each other. A number representation of the number of partial atherectomy blades 121 is schematically illustrated in fig. 1, and the number and spacing of the atherectomy blades 121 may vary depending on the particular clinical application in order to achieve better resection.
Example two
This embodiment discloses a catheter structure for loading a rotary shaver, referring to fig. 4, comprising:
a catheter body 3 having a rotary cutter placement area A; and
the clamping structure is arranged in the catheter body 3 and used for clamping the rotary cutter 1;
specifically, the retaining structure includes:
an annular table 30 located inside the catheter body 3, close to one end of said catheter body 3;
a plurality of retainers 31 in an annular array about the centerline of the catheter body 3;
when the rotary cutter 1 is moved to the rotary cutter placing area a, the annular table 30 and the plurality of holding members 31 hold the lower end and the upper end of the rotary cutter 1, respectively, to restrict the movement of the position thereof.
Specifically, the retainer 31 has:
an elastic connecting arm 31a, one end of the connecting arm 31a is connected to the inner wall of the catheter body 3;
a catching arm 31b at the other end of the connecting arm 31 a;
wherein, the end of the catching arm 31b has a catching part 31 c; the connecting arm 31a extends obliquely toward the center of the catheter 3 at a predetermined angle (for example, 15 °); the catching arm 31b is substantially parallel to the center line of the guide duct 3, and extends downward from the end of the connecting arm 31 b.
The connecting arm 31a has a larger elastic coefficient than the retaining arm 31b, and when the rotary shaver 1 enters from the catheter body 3 and falls into the rotary shaver placing area a, the rotary shaver 1 overcomes the elastic force of the connecting arm 31a by means of the gravity of the rotary shaver 1, and presses the connecting arm 31a to the inner wall of the catheter 3; when the rotary shaver 1 falls into the rotary shaver placing area a, the lower end of the rotary shaver 1 abuts against the annular table 30, and the upper end thereof is approximately located at the lower end of the retaining portion 31c, i.e., the rotary shaver placing area a just defines the space of the rotary shaver 1 itself.
Because the connecting arm 31a has elasticity, when the rotary shaver 1 falls into the rotary shaver placing area a, it is restored by its own elasticity, so that the holding portion 31c is substantially clamped at the upper end of the rotary shaver 1.
Specifically, when the rotary shaver 1 is operated, an upward pushing force is generated, that is, the rotary shaver 1 applies a pushing force to the connecting arm 31a and the retaining arm 31 b; in order to ensure that the atherectomy device 1 is stably positioned in the atherectomy device placement area a, the connecting arm 31a is preferably made of a material having a unidirectional elasticity characteristic, i.e., the connecting arm 31a has a good tendency to press from the center of the catheter body 3 toward the inner wall of the catheter body 3 when being stressed, but has no tendency to expand from the inner wall of the catheter body 3 toward the center of the catheter body 3.
EXAMPLE III
This embodiment provides a rotational atherectomy device, see fig. 5, comprising:
the rotary shaver 1 according to the first embodiment;
the catheter structure of the second embodiment;
a developer ring 2 located within the catheter body 3; and
and the controller is used for controlling the starting or stopping of the rotary cutter 1.
Optionally, the rotary-cut device further comprises a through hole
A guide wire (not shown) in the guide wire hole 110, so as to convey the rotary shaver 1 to the rotary shaver placing region a; the guide wire extends from one end of the catheter body 3 to the other end of the catheter body 3 through the inside of the catheter.
As a variation:
the catheter body 3 further has a handle 4 formed at one end of the catheter body 3;
the handle is provided with a wire guide opening 6 and an air outlet 5;
the guide wire port 6 is communicated with the catheter body 3, and the center of the guide wire port 6 is basically consistent with that of the catheter body 3; the air outlet 5 is formed in the side face of the handle 4 and communicated with the catheter body 3.
Accordingly, in this variant embodiment, the guide wire extends from said wire port 6 through the interior of the catheter body 3 to the other end of the catheter body 3.
According to the embodiment, in the operation, after the lesion position of the thrombus is obtained, the rotary cutter 1 enters the blood vessel of the human body through the guide wire, and then the rotary cutter 1 is controlled by the controller in the handle 4 to carry out rotary cutting on the thrombus at the lesion position, so that the thrombus removal efficiency and the cure rate are improved, and the safety of the operation is ensured.
In the foregoing, only certain exemplary embodiments have been described briefly. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it is to be understood that the terms "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "center," "longitudinal," "lateral," "length," "width," "thickness," "vertical," "horizontal," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings, or are the orientations and positional relationships conventionally found in use of the products of the present invention, or are the orientations and positional relationships conventionally understood by those skilled in the art, merely for convenience of description and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
The terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected or detachably connected or integrated; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The above disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described above. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.
Claims (10)
1. Rotary cutter for dredging when blood vessel is blocked, which is characterized by comprising:
an inner component, an outer component; and an intermediate layer located between the inner component and the outer component;
the inner assembly is provided with a rotary cutting ring layer consisting of a plurality of rotary cutting blades;
the middle part of the internal component is provided with a guide wire hole for leading in a guide wire;
the external component is provided with a micro motor for pushing the rotary cutting blade to rotate;
the inner assembly is telescopically arranged in the outer assembly through the middle layer.
2. The rotational atherectomy device of claim 1, wherein the rotary-cut loop layer further comprises a plurality of suction ports, the suction ports being evenly distributed around the guidewire port in the spaced area between each two adjacent rotary-cut blades for suctioning blood clots and impurities left after rotational cutting.
3. A rotary shaver according to claim 2, wherein said suction ports are provided in the same number as the rotary cutter blades and are arranged in a staggered manner.
4. A catheter structure for loading a rotary shaver, comprising:
a catheter body having a rotational cutter placement region; and
the clamping structure is arranged in the catheter body and used for clamping the rotary cutter;
the retaining structure includes:
an annular table located inside the catheter body and proximate to one end of the catheter body;
a plurality of catches in an annular array about a centerline of the catheter body;
when the rotary cutter is moved to the rotary cutter placing area, the annular table and the plurality of clamping pieces respectively clamp the lower end and the upper end of the rotary cutter to limit the position of the rotary cutter to move.
5. The catheter structure of claim 4, wherein the retaining member comprises:
one end of the elastic connecting arm is connected with the inner wall of the catheter body;
a holding arm located at the other end of the connecting arm;
wherein the end of the clamping arm is provided with a clamping part; the connecting arm extends towards the center of the guide pipe body in an inclined shape at a preset included angle; the clamping arm is approximately parallel to the central line of the catheter body and extends downwards from the end part of the connecting arm.
6. The catheter structure for loading a rotational atherectomy device of claim 5, wherein:
the elastic coefficient of the connecting arm is greater than that of the clamping arm;
the connecting arm is made of a material having unidirectional elastic properties.
7. Rotary-cut device, its characterized in that includes:
a rotary shaver according to any one of claims 1 to 3;
the duct structure according to any one of claims 4 to 5;
a visualization ring located within the catheter body; and
and the controller is used for controlling the starting or stopping of the rotary cutter.
8. The atherectomy device of claim 7, further comprising a guide wire disposed through the guide wire hole for delivering the atherectomy device to an atherectomy device placement area; the guide wire extends from one end of the catheter body to the other end of the catheter body through the interior of the catheter.
9. The rotational atherectomy device of claim 7, wherein:
the catheter body further has a handle formed at one end of the catheter body;
the handle is provided with a guide wire port and an air outlet;
the guide wire port is communicated with the catheter, and the center of the guide wire port is basically consistent with that of the catheter body; the air outlet is formed in the side face of the handle and communicated with the catheter body.
10. The atherectomy device of claim 9, further comprising a guide wire disposed through the guide wire hole for delivering the atherectomy device to an atherectomy device placement area; the guide wire extends from the guide wire port to the other end of the catheter body through the interior of the catheter body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022052376.0U CN213641107U (en) | 2020-09-18 | 2020-09-18 | Rotary cutter, catheter structure for loading rotary cutter and rotary cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022052376.0U CN213641107U (en) | 2020-09-18 | 2020-09-18 | Rotary cutter, catheter structure for loading rotary cutter and rotary cutting device |
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| Publication Number | Publication Date |
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| CN213641107U true CN213641107U (en) | 2021-07-09 |
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| CN202022052376.0U Active CN213641107U (en) | 2020-09-18 | 2020-09-18 | Rotary cutter, catheter structure for loading rotary cutter and rotary cutting device |
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| CN (1) | CN213641107U (en) |
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