CN117653882A - Guiding catheter with adjustable pipe diameter - Google Patents
Guiding catheter with adjustable pipe diameter Download PDFInfo
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- CN117653882A CN117653882A CN202410140280.XA CN202410140280A CN117653882A CN 117653882 A CN117653882 A CN 117653882A CN 202410140280 A CN202410140280 A CN 202410140280A CN 117653882 A CN117653882 A CN 117653882A
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- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 208000024172 Cardiovascular disease Diseases 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 208000024248 Vascular System injury Diseases 0.000 description 2
- 208000012339 Vascular injury Diseases 0.000 description 2
- 206010047163 Vasospasm Diseases 0.000 description 2
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- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002526 effect on cardiovascular system Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 208000007536 Thrombosis Diseases 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
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- 208000015181 infectious disease Diseases 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
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- 238000002791 soaking Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
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Abstract
The embodiment of the invention provides a guiding catheter with adjustable pipe diameter, which comprises: the catheter comprises a catheter body support, wherein the catheter body support is a movable support and can be driven to change the radial dimension of the catheter, so that the radial dimension of the catheter and the radial dimension of the catheter body support are synchronously changed; the adjusting mechanism is connected with the pipe body support and used for driving the pipe body support to move so as to realize radial size adjustment of the pipe body support and the guide pipe; and the locking mechanism is connected with the adjusting mechanism and used for locking the adjusting mechanism to limit the movement of the adjusting mechanism or unlocking the adjusting mechanism so that the adjusting mechanism can drive the pipe body bracket to adjust the radial dimension of the catheter. The guiding catheter with adjustable pipe diameter provided by the invention has a simple structure, and can effectively adjust the pipe diameter according to the requirement.
Description
Technical Field
The embodiment of the invention relates to the technical field of medical instruments, in particular to a guiding catheter with an adjustable pipe diameter.
Background
The number of patients with cardiovascular diseases is also increasing stepwise, and especially female patients are obviously increasing. Cardiovascular intervention is one of the main treatment modes of cardiovascular diseases, and a guiding catheter is needed in cardiovascular treatment, and enters a blood vessel through an external Zhou Tong path for operation treatment. While female patients often develop the following conditions during treatment: emotional agitation, vascular weakness, and high body sensitivity. It is easy to cause occurrence of vasospasm. This results in limited catheter handling and difficult tube replacement, as violent pulling can also cause serious vascular injury and even occlusion.
The medical catheter used at present is guided according to the common catheter of structure and design, and the operation of catheter needs the doctor to make accurate judgement to pathological change position, and the skill and the professional level requirement of doctor are higher.
The common catheter still has some problems and defects, such as long time for indwelling the catheter when encountering complex lesions, thrombus and infection are easy to generate, and the catheter is soft when being soaked in blood for a long time, so that the operation difficulty is increased, the comfort of a patient is influenced, the operation time is prolonged, and therefore, the research and development of the novel medical catheter are of great significance for solving the problems and the defects.
The common catheter in the prior art is usually a section of plastic with a certain length, the front end of the catheter is tapered so as to be conveniently inserted into a blood vessel, the tail end of the catheter is matched with the end of an injection needle so as to be conveniently connected with instruments such as a syringe, and the catheter can be divided into different shapes such as single arc, reverse arc, double arc, liver arc front view, side view, three arcs and the like according to the positions of the catheter inserted into different blood vessels so as to be conveniently inserted into the blood vessels at different positions.
Problems and disadvantages of the prior art
1. The selection of the model of the catheter depends on the experience of the surgeon, the selection of the model of the catheter depends on the experience judgment of the surgeon, the model selection is poor, the treatment effect is affected, and the operation time is prolonged.
2. Catheter weakness: for complex lesions, the catheter remains in the blood vessel for a long time, and long-time blood soaking of the catheter may cause the catheter to become soft and weak, increasing the difficulty of operation.
3. Affecting patient comfort: the improper operation of the catheter is easy to cause tension and vasospasm of the patient, and the psychological burden of the patient is increased.
4. The flexibility is poor: the existing conduit type in the market is relatively fixed, lacks variability, and is not flexible in use and selection.
Disclosure of Invention
The invention provides the pipe diameter-adjustable guide pipe which has a simple structure and can effectively adjust the pipe diameter according to the requirements.
In order to solve the above technical problems, an embodiment of the present invention provides a guiding catheter with adjustable pipe diameter, which is characterized by comprising:
the catheter comprises a catheter body support, wherein the catheter body support is a movable support and can be driven to change the radial dimension of the catheter, so that the radial dimension of the catheter and the radial dimension of the catheter body support are synchronously changed;
the adjusting mechanism is connected with the pipe body support and used for driving the pipe body support to move so as to realize radial size adjustment of the pipe body support and the guide pipe;
and the locking mechanism is connected with the adjusting mechanism and used for locking the adjusting mechanism to limit the movement of the adjusting mechanism or unlocking the adjusting mechanism so that the adjusting mechanism can drive the pipe body bracket to adjust the radial dimension of the catheter.
As an alternative embodiment, a layer structure is respectively enclosed on the inner side and the outer side of the pipe body support, and the radial dimension of the layer structure and the radial dimension of the pipe body support in the pipe body radial direction synchronously change.
As an alternative embodiment, the inner side of the pipe body support is provided with a first layer structure, the outer side of the pipe body support is provided with a second layer structure, the first layer structure and the second layer structure are formed by preparing materials with elasticity and toughness, and one side of the first layer structure, which is away from the second layer structure, is provided with a drug coating.
As an optional embodiment, the pipe body support comprises a plurality of adjusting rings distributed along the length direction of the catheter, a plurality of first support rods distributed on the inner rings of all the adjusting rings and a plurality of second support rods distributed on the outer rings of all the adjusting rings, the first support rods and the second support rods gradually gather towards one end far away from the adjusting mechanism along the length direction, and the inner diameters of the adjusting rings are correspondingly reduced along with the gathering of the first support rods and the second support rods.
As an alternative embodiment, the adjusting ring is an annular disc-shaped body formed by coiling, a plurality of first support rods are respectively arranged on the inner ring of the adjusting ring, a plurality of second support rods are respectively arranged on the outer ring of the adjusting ring, and the adjusting mechanism is connected with the plurality of first support rods to drive the first support rods to move, so that the inner ring and the outer ring of the adjusting ring are synchronously driven to move in the direction of reducing or increasing the radial size.
As an alternative embodiment, the adjusting mechanism is a rotating mechanism, and the rotating angle of the adjusting mechanism is correspondingly marked with codes representing the pipe diameter size, when the adjusting mechanism rotates along a first direction, the plurality of connected first bracket rods are driven to rotate, so that the inner ring of the adjusting ring is inwards rotated, the outer ring of the adjusting ring is driven to linearly move inwards along the radial direction, and when the adjusting mechanism rotates along a second direction, the plurality of connected first bracket rods are driven to rotate, so that the inner ring of the adjusting ring is outwards rotated, and the outer ring of the adjusting ring is driven to linearly move outwards along the radial direction.
As an alternative embodiment, the first layer structure is arranged on the inner sides of the plurality of first support rods, the second layer structure is arranged on the outer sides of the plurality of second support rods, the second layer structure is connected with the second support rods to form a whole, and a gap is reserved between the whole and the adjusting ring;
the first layer structure and the second layer structure are correspondingly provided with a plurality of groups of concave-convex matched annular protrusions and annular grooves, when the first support rod rotates, the first layer structure is driven to rotate relative to the second layer structure based on the corresponding combined annular protrusions and annular grooves, when the radial size of the adjusting ring is changed, the inner diameter of the first layer structure is synchronously changed, and the inner diameter of the second layer structure is driven to synchronously change based on the corresponding combined annular protrusions and annular grooves.
As an alternative embodiment, the catheter also comprises a catheter support, one end of the catheter, which faces the adjusting mechanism, passes through the catheter support and is connected with the adjusting mechanism, and the adjusting mechanism can move axially relative to the catheter support so as to be abutted against or separated from the catheter support;
the locking mechanism comprises a first locking piece arranged on the catheter support and a second locking piece arranged on the adjusting mechanism, when the first locking piece is matched and connected with the second locking piece, the adjusting mechanism is abutted to the catheter support and is limited to rotate, and when the adjusting mechanism is far away from the catheter support and the first locking piece is separated from the second locking piece, the adjusting mechanism is unlocked.
As an alternative embodiment, the first locking member and the second locking member are respectively a safety valve and a gear capable of being mutually clamped with the safety valve, the gear is arranged on the adjusting mechanism, and the safety valve is fixed on the catheter support.
As an alternative embodiment, the locking mechanism further includes:
the first clamping piece is provided with a first limiting hole;
the second clamping piece is arranged opposite to the first clamping piece, one end of the second clamping piece, which faces the first clamping piece, is an open end communicated with the cavity, one end of the first clamping piece extends into the cavity through the open end and is elastically connected with the closed end of the second clamping piece, the other end of the first clamping piece is positioned outside the second clamping piece, a second limiting hole is formed in the second clamping piece, the guide pipe penetrates through the first limiting hole and the second limiting hole, and when the other end of the first clamping piece is operated, the coincidence degree of the first limiting hole and the second limiting hole changes when the first clamping piece moves relative to the second clamping piece, so that the guide pipe is in a locking state or an unlocking state;
the first clamping piece and the second clamping piece are arranged in the catheter support along the radial direction of the catheter, and at least the other end of the first clamping piece extends out of the catheter support and can move relative to the catheter support.
Based on the disclosure of the above embodiment, it can be known that the beneficial effects of the embodiment of the invention include simple overall structure, easy preparation, including a catheter, an adjusting mechanism, and a locking mechanism, where the catheter includes a tubular body support and different layer structures arranged on the tubular body support, the tubular body support is a movable support, and can be driven to change radial dimension, and the radial dimension of the catheter and the radial dimension of the tubular body support synchronously change; the adjusting mechanism is connected with the pipe body support and is used for driving the pipe body support to move so as to realize radial size adjustment of the pipe body support and the guide pipe; the locking mechanism is connected with the adjusting mechanism and used for locking the movement of the adjusting mechanism so as to fix the radial sizes of the pipe body support and the pipe or unlocking the adjusting mechanism, so that the radial sizes of the pipe body support and the pipe can be adjusted. Based on the guide catheter in this embodiment, can adjust body size in a flexible way according to the demand, reduce patient because of need change not painful and the treatment cost that the catheter of equidimension born, promoted treatment efficiency simultaneously, ensure patient's timely treatment. The rotary code number of marking on the adjustment mechanism can guide the size of the current body pipe diameter of medical staff, in addition, the catheter is formed by at least three layers of structures, the flexibility and the toughness are improved, the damage risk of the body can not be increased even if the catheter is soaked in blood for a long time, and the use requirements of different lesions on the catheter can be met.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a guide catheter with adjustable pipe diameter in an embodiment of the invention.
Fig. 2 is a schematic view of a part of a guiding catheter with adjustable pipe diameter according to an embodiment of the invention.
FIG. 3 is a block diagram of an adjusting ring of a guide catheter with adjustable tube diameter in an embodiment of the invention.
Fig. 4 is a schematic view of a part of a guiding catheter with adjustable pipe diameter according to an embodiment of the invention.
Reference numerals:
1-a catheter; 2-an adjusting mechanism; 3-a tube body bracket; 4-a first layer structure; 5-a second layer structure; 6-a first bracket rod; 7-a second bracket rod; 8-adjusting ring; 9-a first locking member; 10-a second locking member; 11-a first clip; 12-a second clamping piece; 13-a first limiting hole; 14-a second limiting hole.
Detailed Description
Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings, but not limiting the invention.
It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the following description should not be taken as limiting, but merely as exemplification of the embodiments. Other modifications within the scope and spirit of this disclosure will occur to persons of ordinary skill in the art.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.
These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the accompanying drawings.
It is also to be understood that, although the invention has been described with reference to some specific examples, a person skilled in the art will certainly be able to achieve many other equivalent forms of the invention, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
The above and other aspects, features and advantages of the present disclosure will become more apparent in light of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present disclosure will be described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely examples of the disclosure, which may be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the disclosure in unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.
The specification may use the word "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides a guiding catheter with an adjustable pipe diameter, which is characterized by comprising:
a catheter 1 comprising a tube support 3, the tube support 3 being a mobile support that can be driven to change the radial dimension of the catheter 1 so as to synchronize the radial dimension of the catheter 1 with the radial dimension of the tube support 3;
the adjusting mechanism 2 is connected with the pipe body bracket 3 and is used for driving the pipe body bracket 3 to move so as to realize radial size adjustment of the pipe body bracket 3 and the catheter 1;
and the locking mechanism is connected with the adjusting mechanism 2 and is used for locking the adjusting mechanism 2 to limit the movement of the adjusting mechanism 2 or unlocking the adjusting mechanism 2 so that the adjusting mechanism can drive the pipe body bracket 3 to adjust the radial dimension of the catheter 1.
As can be seen from the above, the beneficial effects of the present embodiment include simple overall structure, easy preparation, including a catheter 1, an adjusting mechanism 2, and a locking mechanism, where the catheter 1 includes a tube support 3, and the tube support 3 is a movable support that can be driven to change the radial dimension of the catheter 1, so as to change the radial dimension of the catheter 1 and the radial dimension of the tube support 3 synchronously; the adjusting mechanism 2 is connected with the pipe body bracket 3 and is used for driving the pipe body bracket 3 to move so as to realize radial size adjustment of the pipe body bracket 3 and the catheter 1; the locking mechanism is connected with the adjusting mechanism 2 and is used for locking the adjusting mechanism 2 to limit the movement of the adjusting mechanism 2 or unlocking the adjusting mechanism 2 so that the adjusting mechanism can drive the pipe body bracket 3 to adjust the radial dimension of the catheter 1. Based on the guiding catheter 1 in this embodiment, the size of the catheter body can be flexibly adjusted according to the use requirement, so as to reduce the pain and the treatment cost of the patient due to the need of changing the catheters 1 with different sizes, improve the treatment efficiency and ensure the timely treatment of the patient. The rotary code number marked on the regulating mechanism 2 can guide the medical staff on the current pipe body pipe diameter, in addition, the catheter 1 is formed by at least three layers, the flexibility and the toughness are improved, the damage risk of the pipe body is not increased even if the catheter is soaked in blood for a long time, and the use requirements of different lesions on the catheter 1 can be met.
As shown in fig. 2, in this embodiment, a layer structure is respectively enclosed on the inner side and the outer side of the pipe body support 3, and the radial dimension of the layer structure and the radial dimension of the pipe body support 3 in the pipe body radial direction change synchronously. That is, the inner layer of the pipe body support 3 is provided with a layer structure forming the inner pipe wall of the pipe 1, the outer layer of the pipe body support 3 is provided with a layer structure forming the outer pipe wall of the pipe 1, and the radial dimensions of the two layer structures are not fixed, but can synchronously change along with the dimensional change of the pipe body support 3 in the pipe body radial direction, such as synchronous increase or synchronous decrease, thereby realizing the change of the inner diameter of the pipe 1.
Specifically, the inner side of the pipe body support 3 is provided with a first layer structure 4, the outer side of the pipe body support 3 is provided with a second layer structure 5, the first layer structure 4 and the second layer structure 5 are made of materials with elasticity and toughness, for example, SBC and the like, and SBC is one of the components of the styrene thermoplastic elastomer. The side of the first layer structure 4 facing away from the second layer structure 5 is provided with a drug coating, i.e. the side intended for contacting the blood is provided with a drug coating, which can be applied, for example, by impregnating a drug solution or by coating the layer structure with a drug, in a manner not limited.
As shown in fig. 3, the pipe body support 3 in this embodiment includes a plurality of adjusting rings 8 arranged along the length direction of the catheter 1, a plurality of first support rods 6 arranged at the inner rings of all the adjusting rings 8, and a plurality of second support rods 7 surrounding the outer rings of all the adjusting rings 8, where the plurality of first support rods 6 and the plurality of second support rods 7 gradually gather toward one end far away from the adjusting mechanism 2 along the length direction, that is, the front end size of the catheter 1 is smaller than the rear end size, and the rear end of the catheter 1 is one end connected with the adjusting mechanism 2. Likewise, as the lumen enclosed by the stent of the catheter 1 decreases, the inner diameters of the plurality of the adjusting rings 8 also correspondingly decrease as the first stent rod 6 and the second stent rod 7 are gathered.
The adjusting ring 8 is an annular disc-shaped body formed by coiling, namely the adjusting ring 8 is disc-shaped, and the whole body is in a spiral shape of a plane plate and is provided with an inner ring and an outer ring. The first bracket rods 6 are respectively arranged on the inner ring of the adjusting ring 8, namely connected with the inner ring, and the second bracket rods 7 are matched and arranged on the outer ring of the adjusting ring 8 in a surrounding manner and have a certain gap with the outer ring. The setting position of each first support rod 6 is not fixed, and can be comprehensively determined according to the radial size range of the catheter 1 to be adjusted, for example, the moving travel range of the adjusting ring 8 is determined, the setting position of each first support rod 6 is determined based on the travel range, and meanwhile, the setting number of the first support rods 6 can be determined, so that the effective adjustment of the radial size of the catheter 1 can be realized by cooperation based on the number and the positions. The number and positions of the second support bars 7 may be determined according to the overall size of the catheter 1.
Further, in this embodiment, the adjusting mechanism 2 is a rotating mechanism, and the adjusting mechanism 2 is connected to the plurality of first support rods 6, so as to drive the first support rods 6 to rotate, and further synchronously drive the inner ring and the outer ring of the adjusting ring 8 to move in a direction of reducing or increasing the radial dimension. That is, the first bracket rod 6 drives the inner ring of the adjusting ring 8 to move to increase or decrease the size of the adjusting ring 8, thereby realizing the adjustment of the size of the catheter 1.
The second bracket rod 7 is fixedly arranged with the second layer structure 5, does not move along with the driving of the adjusting mechanism 2, and can be correspondingly driven to extend or be driven to gather and shrink along with the increase or decrease of the radial dimension of the first layer structure 4.
Specifically, the first layer structure 4 in the embodiment is arranged on the inner side of the plurality of first support rods 6 and closely clings to the first support rods 6, the second layer structure 5 is arranged on the outer side of the plurality of second support rods 7, and the second layer structure 5 is connected with the second support rods 7 to form a whole, and a gap is formed between the whole and the adjusting ring 8;
the first layer structure 4 and the second layer structure are correspondingly provided with a plurality of groups of concave-convex matched annular protrusions and annular grooves, when the first bracket rod 6 rotates, the first layer structure 4 is driven to rotate relative to the second layer structure 5 based on the corresponding combined annular protrusions and annular grooves, when the radial size of the adjusting ring 8 changes, the inner diameter of the first layer structure 4 synchronously changes, and the inner diameter of the second layer structure 5 is driven to synchronously change based on the corresponding combined annular protrusions and annular grooves. That is, when the first bracket rod 6 is driven to rotate, the first layer structure 4 is driven to rotate together, so that the radial dimension of the first layer structure 4 is driven to synchronously change with the radial dimension of the adjusting ring, and the radial dimension of the first layer structure 4 is changed by the second layer structure 5 based on a plurality of concave-convex matching structures, but the second layer structure 5 is driven to change together, but the radial dimension of the second layer structure 5 is changed by commanding the radial linear movement, and the rotation cannot occur.
Further, the adjusting mechanism 2 is correspondingly marked with codes representing the pipe diameter size along the rotation angle, and can be marked with scales, so that when the adjusting mechanism 2 rotates, the current rotation path can be accurately known based on the corresponding codes and scales, and the current pipe diameter is avoided, so that the operator is not in operation or is in excessive operation. Simultaneously, adjustment mechanism 2 still includes the connector with first cradling piece 6 quantity one-to-one, and each connector links to each other with a first cradling piece 6 respectively, and when adjustment mechanism 2 rotated, it rotates to drive each first cradling piece 6 through the connector.
In this embodiment, when the adjusting mechanism 2 rotates along the first direction, the connected plurality of first bracket rods 6 are driven to rotate, so that the inner ring of the adjusting ring rotates inwards, and the outer ring of the adjusting ring is driven to linearly move inwards along the radial direction. That is, the adjusting mechanism 2 drives the plurality of first support rods 6 to rotate together, the plurality of first support rods 6 rotate into a spiral shape, and at the same time, the first support rods 6 can drive the first layer structure 4 which is abutted against the first support rods to rotate, and the rotation can enable the inner ring of the adjusting ring 8 to continuously rotate inwards, so that the radial dimension of the adjusting ring 8 is reduced. The second bracket rod 7 and the second layer structure 5 which are mutually abutted are positioned outside the outer ring of the adjusting ring 8, so the second bracket rod and the second layer structure 5 cannot rotate together, but the second layer structure 5 and the first layer structure 4 are connected based on the annular concave-convex matching structure, so when the radial dimension of the first layer structure 4 changes, the second bracket rod and the second layer structure 5 can be driven to change together. When the adjusting mechanism 2 rotates along the second direction, the plurality of connected first bracket rods 6 are driven to rotate, so that the inner ring of the adjusting ring rotates outwards, and the outer ring of the adjusting ring is driven to linearly move outwards along the radial direction.
In another embodiment, the guiding catheter 1 further comprises a catheter 1 support, which is cylindrical and has two open ends. The one end of the conduit 1 towards the adjusting mechanism 2 passes through the conduit 1 support and is connected with the adjusting mechanism 2, the adjusting mechanism 2 can move relative to the conduit 1 support in the axial direction so as to be abutted against or separated from the conduit 1 support, namely, the adjusting mechanism 2 and the conduit 1 support are mutually independent, and the adjusting mechanism 2 can move relative to the conduit 1 support in the axial direction so as to be abutted against or separated from one end of the conduit 1 support.
The locking mechanism comprises a first locking piece 9 arranged on the support of the catheter 1 and a second locking piece 10 arranged on the adjusting mechanism 2, when the first locking piece 9 is matched and connected with the second locking piece 10, the adjusting mechanism 2 is abutted against the support of the catheter 1 and is limited to rotate at the same time, namely, the support of the catheter 1 and the adjusting mechanism 2 are connected based on the first locking piece 9 and the second locking piece 10, and meanwhile, based on the two locking pieces, the adjusting mechanism 2 can not rotate relative to the support of the catheter 1 under the state that the adjusting mechanism 2 is abutted against the support of the catheter 1 any more, and only when the adjusting mechanism 2 is far away from the support of the catheter 1, the adjusting mechanism 2 is unlocked when the first locking piece 9 is separated from the second locking piece 10.
In an application example, the first locking member 9 and the second locking member 10 may be, but are not limited to, a safety valve and a gear capable of being engaged with the safety valve, respectively, the gear is mounted on the adjusting mechanism 2, and the safety valve is fixed on the catheter 1 support.
As shown in fig. 1 and fig. 4, in order to achieve better restriction on the catheter 1, the second layer structure 5 of the catheter 1 is prevented from rotating, so as to drive the whole blood vessel to rotate, and cause vascular injury, the locking mechanism in this embodiment further includes:
the first clamping piece 11 is provided with a first limiting hole 13;
the second clamping piece 12 is arranged opposite to the first clamping piece 11, the second clamping piece 12 is provided with a cavity, one end facing the first clamping piece 11 is an open end communicated with the cavity, one end of the first clamping piece 11 extends into the cavity through the open end and is elastically connected with the closed end of the second clamping piece 12, the other end of the first clamping piece 11 is positioned outside the second clamping piece 12, the second clamping piece 12 is provided with a second limiting hole 14, the conduit 1 penetrates through the first limiting hole 13 and the second limiting hole 14, and when the other end of the first clamping piece 11 is operated, the coincidence degree of the first limiting hole 13 and the second limiting hole 14 changes when the first clamping piece 11 moves relative to the second clamping piece 12, so that the conduit 1 is in a locking state or an unlocking state;
the first clamping piece 11 and the second clamping piece 12 are arranged in the catheter 1 support along the radial direction of the catheter 1, and at least the other end of the first clamping piece 11 extends out of the catheter 1 support and can move relative to the catheter 1 support.
For example, the first clamping member 11 is in a column shape, a first limiting hole 13 is formed in the first clamping member along the radial direction, the second clamping member 12 is in a column shape, the size of the second clamping member is larger than that of the first clamping member 11, the second clamping member 12 is provided with a cavity and an open end communicated with the cavity, one end of the first clamping member 11 extends into the cavity through the open end, and the second clamping member 12 is connected with a closed end opposite to the open end through an elastic member, for example, a spring. Based on the elastic member, the first clamping member 11 can move relative to the second clamping member 12, and the other end of the first clamping member 11 extends out of the second clamping member 12 to form an operation end. When the elastic piece is in a natural state, the elastic piece pushes the first clamping piece 11 to move towards the direction of extending out of the second clamping piece 12, at the moment, the overlapping range of the first limiting hole 13 and the second limiting hole 14 is smaller, so that the guide pipe 1 penetrating through the first limiting hole 13 and the second limiting hole 14 is locked between the hole walls of the two limiting holes and cannot move axially or radially or circumferentially, and when a user presses the first clamping piece 11 to move towards the direction of extending into the second clamping piece 12 and compresses the elastic piece, the overlapping range of the first limiting hole 13 and the second limiting hole 14 is enlarged, and at the moment, the guide pipe 1 is in an unlocking state and can move axially, radially and circumferentially in the first limiting hole 13 and the second limiting hole 14.
Based on the locking mechanism in this embodiment, an operator can first operate the first clamping member 11 to make the catheter 1 in an unlocked state, then operate the adjusting mechanism 2 to make the catheter 1 in an unlocked state, at this time, rotate the adjusting mechanism 2 to adjust the pipe diameter of the catheter 1, and after the adjustment is completed, first lock the adjusting mechanism 2 and then release the first clamping member 11 to make the catheter 1 in a locked state, so that the pipe diameter of the catheter 1 can be limited in an adjusted state.
The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this invention will occur to those skilled in the art, and are intended to be within the spirit and scope of the invention.
Claims (10)
1. A guide catheter with adjustable tube diameter, comprising:
the catheter comprises a catheter body support, wherein the catheter body support is a movable support and can be driven to change the radial dimension of the catheter, so that the radial dimension of the catheter and the radial dimension of the catheter body support are synchronously changed;
the adjusting mechanism is connected with the pipe body support and used for driving the pipe body support to move so as to realize radial size adjustment of the pipe body support and the guide pipe;
and the locking mechanism is connected with the adjusting mechanism and used for locking the adjusting mechanism to limit the movement of the adjusting mechanism or unlocking the adjusting mechanism so that the adjusting mechanism can drive the pipe body bracket to adjust the radial dimension of the catheter.
2. The guide catheter with adjustable pipe diameter according to claim 1, wherein a layer of structure is respectively enclosed on the inner side and the outer side of the pipe body support, and the radial dimension of the layer of structure and the radial dimension of the pipe body support in the pipe body radial direction synchronously change.
3. The guiding catheter with adjustable pipe diameter according to claim 2, wherein a first layer structure is arranged on the inner side of the pipe body support, a second layer structure is arranged on the outer side of the pipe body support, the first layer structure and the second layer structure are made of materials with elasticity and toughness, a drug coating is arranged on one side, away from the second layer structure, of the first layer structure, and the increase or decrease of the radial dimension of the pipe body support can synchronously drive the dimensional changes of the first layer structure and the second layer structure.
4. The guide catheter with adjustable pipe diameter according to claim 3, wherein the catheter body support comprises a plurality of adjusting rings distributed along the length direction of the catheter, a plurality of first support rods distributed on the inner rings of all the adjusting rings and a plurality of second support rods distributed on the outer rings of all the adjusting rings, the plurality of first support rods and the plurality of second support rods gradually gather towards one end far away from the adjusting mechanism along the length direction, and the radial dimension of the plurality of adjusting rings correspondingly decreases along with the gathering of the first support rods and the second support rods, wherein gaps are reserved between the second support rods and the adjusting rings.
5. The guide catheter with adjustable pipe diameter according to claim 4, wherein the adjusting ring is an annular disc-shaped body formed by coiling, the plurality of first support rods are respectively arranged on the inner ring of the adjusting ring, the plurality of second support rods are arranged on the outer ring of the adjusting ring in a surrounding mode, and the adjusting mechanism is connected with the plurality of first support rods to drive the first support rods to move so as to synchronously drive the inner ring and the outer ring of the adjusting ring to move in a direction of reducing or increasing radial size.
6. The adjustable diameter guide catheter of claim 5 wherein the adjustment mechanism is a rotating mechanism and wherein the angle of rotation is correspondingly marked with a code characterizing the diameter of the catheter, and wherein when the adjustment mechanism is rotated in a first direction, the plurality of associated first support rods are rotated to rotate the inner ring of the adjustment ring, thereby reducing the radial dimension of the adjustment ring, and wherein when the adjustment mechanism is rotated in a second direction, the plurality of associated first support rods are rotated to rotate the inner ring of the adjustment ring, thereby increasing the radial dimension of the adjustment ring.
7. The adjustable diameter guide catheter of claim 6, wherein the first layer structure is disposed on an inner side of the plurality of first support rods, the second layer structure is disposed on an outer side of the plurality of second support rods, and the second layer structure is connected to the second support rods to form a whole, and a gap is formed between the whole and the adjusting ring;
the first layer structure and the second layer structure are correspondingly provided with a plurality of groups of concave-convex matched annular protrusions and annular grooves, when the first support rod rotates, the first layer structure is driven to rotate relative to the second layer structure based on the corresponding combined annular protrusions and annular grooves, when the radial size of the adjusting ring is changed, the inner diameter of the first layer structure is synchronously changed, and the inner diameter of the second layer structure is driven to synchronously change based on the corresponding combined annular protrusions and annular grooves.
8. The adjustable diameter guide catheter of claim 1, further comprising a catheter holder through which one end of the catheter facing the adjustment mechanism is coupled to the adjustment mechanism, the adjustment mechanism being axially movable relative to the catheter holder to abut against or disengage from the catheter holder;
the locking mechanism comprises a first locking piece arranged on the catheter support and a second locking piece arranged on the adjusting mechanism, when the first locking piece is matched and connected with the second locking piece, the adjusting mechanism is abutted to the catheter support and is limited to rotate, and when the adjusting mechanism is far away from the catheter support and the first locking piece is separated from the second locking piece, the adjusting mechanism is unlocked.
9. The guide catheter with adjustable pipe diameter according to claim 8, wherein the first locking piece and the second locking piece are respectively a safety valve and a gear which can be mutually clamped with the safety valve, the gear is arranged on the adjusting mechanism, and the safety valve is fixed on the catheter support.
10. The adjustable tube diameter guide catheter of claim 8, wherein the locking mechanism further comprises:
the first clamping piece is provided with a first limiting hole;
the second clamping piece is arranged opposite to the first clamping piece, one end of the second clamping piece, which faces the first clamping piece, is an open end communicated with the cavity, one end of the first clamping piece extends into the cavity through the open end and is elastically connected with the closed end of the second clamping piece, the other end of the first clamping piece is positioned outside the second clamping piece, a second limiting hole is formed in the second clamping piece, the guide pipe penetrates through the first limiting hole and the second limiting hole, and when the other end of the first clamping piece is operated, the coincidence degree of the first limiting hole and the second limiting hole changes when the first clamping piece moves relative to the second clamping piece, so that the guide pipe is in a locking state or an unlocking state;
the first clamping piece and the second clamping piece are arranged in the catheter support along the radial direction of the catheter, and at least the other end of the first clamping piece extends out of the catheter support and can move relative to the catheter support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410140280.XA CN117653882A (en) | 2024-02-01 | 2024-02-01 | Guiding catheter with adjustable pipe diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410140280.XA CN117653882A (en) | 2024-02-01 | 2024-02-01 | Guiding catheter with adjustable pipe diameter |
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| CN117653882A true CN117653882A (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410140280.XA Pending CN117653882A (en) | 2024-02-01 | 2024-02-01 | Guiding catheter with adjustable pipe diameter |
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| CN (1) | CN117653882A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101933821A (en) * | 2009-06-30 | 2011-01-05 | 微创医疗器械(上海)有限公司 | Mciro-catheter |
| JP2013183792A (en) * | 2012-03-06 | 2013-09-19 | Olympus Corp | Nerve stimulator and nerve stimulation system |
| CN112568945A (en) * | 2020-12-03 | 2021-03-30 | 彭涛 | Ureter soft lens introducing sheath with adjustable pipe diameter and capable of displaying pipe diameter |
| WO2021074371A1 (en) * | 2019-10-17 | 2021-04-22 | Xenios Ag | Guide element for a controllable vessel expansion system, and controllable vessel expansion system |
| CN217246124U (en) * | 2022-04-15 | 2022-08-23 | 天津市西青医院 | Diameter variable catheter |
-
2024
- 2024-02-01 CN CN202410140280.XA patent/CN117653882A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101933821A (en) * | 2009-06-30 | 2011-01-05 | 微创医疗器械(上海)有限公司 | Mciro-catheter |
| JP2013183792A (en) * | 2012-03-06 | 2013-09-19 | Olympus Corp | Nerve stimulator and nerve stimulation system |
| WO2021074371A1 (en) * | 2019-10-17 | 2021-04-22 | Xenios Ag | Guide element for a controllable vessel expansion system, and controllable vessel expansion system |
| CN114765959A (en) * | 2019-10-17 | 2022-07-19 | 伊克尼奥斯股份有限公司 | Guide element for a controllable tube expansion system and controllable tube expansion system |
| CN112568945A (en) * | 2020-12-03 | 2021-03-30 | 彭涛 | Ureter soft lens introducing sheath with adjustable pipe diameter and capable of displaying pipe diameter |
| CN217246124U (en) * | 2022-04-15 | 2022-08-23 | 天津市西青医院 | Diameter variable catheter |
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Inventor after: Sun Peng Inventor after: Duan Juntao Inventor after: Tang Yida Inventor after: Tong Sumei Inventor after: Wang Yupeng Inventor after: Wu Yingqian Inventor after: Zhang Sai Inventor after: Zhang Dawei Inventor before: Sun Peng Inventor before: Duan Juntao Inventor before: Tang Yida Inventor before: Tong Sumei Inventor before: Wang Yupeng Inventor before: Wu Yingqian Inventor before: Zhang Sai Inventor before: Zhang Dawei |