CN115400323B - Cerebral angiography catheter device - Google Patents
Cerebral angiography catheter device Download PDFInfo
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- CN115400323B CN115400323B CN202211087681.0A CN202211087681A CN115400323B CN 115400323 B CN115400323 B CN 115400323B CN 202211087681 A CN202211087681 A CN 202211087681A CN 115400323 B CN115400323 B CN 115400323B
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- elastic deformation
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- catheter device
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
- A61M25/09041—Mechanisms for insertion of guide wires
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M2025/0063—Catheters; Hollow probes characterised by structural features having means, e.g. stylets, mandrils, rods or wires to reinforce or adjust temporarily the stiffness, column strength or pushability of catheters which are already inserted into the human body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M2025/0177—Introducing, guiding, advancing, emplacing or holding catheters having external means for receiving guide wires, wires or stiffening members, e.g. loops, clamps or lateral tubes
Abstract
The utility model discloses a cerebral angiography catheter device, which comprises a sheath tube, a guide wire penetrating the sheath tube and further comprises: the detachable adjusting mechanism comprises a detachable pipe body connected to the proximal end of the sheath pipe, a pipe body channel for a guide wire to pass through is arranged on the pipe body, the pipe body comprises an elastic deformation section, an extrusion barrel body is sleeved on the pipe body, and the elastic deformation section is deformed by the reciprocating motion of the extrusion barrel body so as to adjust the passing resistance of the guide wire. The utility model provides a cerebral angiography catheter device, which is provided with a detachable adjusting mechanism connected to a sheath tube, and an elastic deformation section is extruded by the reciprocating motion of an extrusion cylinder body on the detachable adjusting mechanism, when a guide wire passes through the detachable adjusting mechanism, the elastic deformation section can be extruded to adjust the internal channel of the tube body so as to adjust the motion resistance of the guide wire when passing through, thereby providing a stable motion resistance, providing a good hand feeling for doctors, and preventing the guide wire from entering too fast.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a cerebral angiography catheter device.
Background
The cerebral angiography examination is to inject iodine-containing contrast agent into blood vessel via catheter to make cerebral blood vessel develop, and to display the form of cerebral blood vessel clearly via DSA machine fast continuous imaging and photo processing to diagnose cerebral vascular diseases. At present, a femoral artery or radial artery intubation method is generally adopted for full cerebral angiography.
If the publication number is CN201520230005.3 and the publication date is 09/2015, the utility model patent named "cerebral angiography catheter via right radial artery route" includes a catheter head end, a catheter distal section, a reverse folding part, a catheter body part and a tail end connector, the catheter head end is of a tapered structure, the catheter distal section is a straight section with a length of about 5 cm-10 cm, the connecting part is of a 360-degree reverse arc with a smaller arc diameter, the catheter body distal section is provided with an arc bend of about 120 DEG, and the tail end connector is adapted with a universal three-way connector. The catheter head end is of a tapered structure, so that the stimulation and damage to the vascular wall are reduced, and the risk of iatrogenic cerebral embolism is reduced; the head end of the catheter is bent inwards at an angle and is short, so that the flexibility of super-selection intubation is met, and the control performance of the catheter after being in a loop is improved; the reverse folding part is in a 360-degree reverse arc shape with smaller arc diameter, so that when passing through the right radial artery route, the catheter is easier to take a loop in the aortic arch, and the forming difficulty of the catheter is reduced; micro steel wires are embedded in the pipe wall of the reverse folding part, so that when the catheter which is in a loop is twisted and controlled through a radial artery way, torque torsion is more convenient, and the catheter is prevented from deforming or winding; the outermost layer of the catheter is treated by the ultra-smooth coating, so that the friction coefficient between the catheter and the inner wall of a blood vessel is reduced, and the risk of iatrogenic cerebral embolism is further reduced; the operation sequence is changed, the left vertebral artery which is difficult to selectively insert the tube in the past starts to be imaged, and the head end of the tube automatically bounces through the continuous withdrawal of the tube, so that other angiography is completed, and the success rate of the operation is greatly improved.
The defects of the patent include that compared with other arterial vessels, cerebral vessels are obviously more curved and more slim, the guide wire and the guide tube can damage the vessel wall when being too fast in the cerebral vessels, and if plaque is arranged in the cerebral vessels, the guide wire can be dropped by the plaque when being too fast, so that cerebral thrombosis is caused.
Disclosure of Invention
The object of the present utility model is to provide a cerebral angiographic catheter device which solves the above-mentioned drawbacks of the prior art.
In order to achieve the above object, the present utility model provides the following technical solutions:
the utility model provides a cerebral angiography catheter device, includes the sheath pipe and wears to locate the seal wire in the sheath pipe, still includes detachable adjustment mechanism, and it includes the body of connection in sheath pipe proximal end that can dismantle, be provided with the body passageway that supplies the seal wire to pass on the body, the body wraps elastic deformation section, the extrusion barrel has been cup jointed on the body, the reciprocating motion extrusion of extrusion barrel elastic deformation section warp in order to adjust the resistance of passing of seal wire.
In the above-mentioned cerebral angiography catheter device, the inner wall of the extrusion cylinder has the same radial dimension, and the outer wall of the elastic deformation section has a structure in which the radial dimension gradually increases from the proximal end to the distal end.
In the cerebral angiography catheter device, the extrusion cylinder body is provided with the radial extension ring, and the extension direction of the radial extension ring extends to the inner side of the extrusion cylinder body.
According to the cerebral angiography catheter device, the plurality of grooves are formed in the inner wall of the extrusion cylinder body, the plurality of protruding portions are arranged on the tube body along the circumferential direction, and the protruding portions and the grooves are in one-to-one corresponding sliding arrangement.
In the above-mentioned cerebral angiography catheter device, the protruding portion may pass through each of the grooves in turn on an axial stroke of the extrusion cylinder.
In the cerebral angiography catheter device, the grooves are formed in the extrusion cylinder body along the axial direction.
In the above-described cerebral angiography catheter device, the elastic deformation section is made of a soft elastic material capable of elastic deformation.
In the cerebral angiography catheter device, the detachable adjusting mechanism is provided with the connecting mechanism.
The cerebral angiography catheter device comprises a connecting barrel sleeved on a tube body, openings are formed in two sides of the connecting barrel, connecting rods are connected in the openings through rotation, annular protrusions are arranged on the connecting rods, annular connecting clamping grooves are formed in a sheath tube, and the annular protrusions correspond to the annular connecting clamping grooves one by one.
In the cerebral angiography catheter device, the annular protrusion is made of elastic materials, and the annular groove is made of hard materials.
In the technical scheme, the cerebral angiography catheter device provided by the utility model is characterized in that the detachable adjusting mechanism is connected to the sheath tube, the elastic deformation section is extruded through the reciprocating motion of the extrusion cylinder body on the detachable adjusting mechanism, the elastic deformation section can deform towards the middle at the moment so that the radial dimension of the catheter body gradually becomes smaller, the guide wire enters the sheath tube after passing through the detachable adjusting mechanism, and the elastic deformation section can be extruded to adjust the internal channel of the catheter body to adjust the motion resistance of the guide wire when passing through the detachable adjusting mechanism, so that a stable motion resistance is provided for a doctor, a good hand feeling is provided, and the guide wire is prevented from entering at an excessively high speed.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
Fig. 1 is a schematic structural view of a cerebral angiography catheter device according to an embodiment of the present utility model;
FIG. 2 is a partial cross-sectional view of a cerebral angiographic catheter device provided in an embodiment of the utility model;
FIG. 3 is a view of an extruded barrel configuration of a cerebral angiography catheter device according to an embodiment of the present utility model;
FIG. 4 is a partial cross-sectional view of a cerebral angiographic catheter device according to another embodiment of the utility model;
reference numerals illustrate:
1. a sheath; 2. an elastically deformable section; 3. extruding the cylinder; 4. a tube body passage; 5. a guide wire; 6. a connecting mechanism; 7. an elastic sealing part; 8. an annular protrusion; 9. a tube body; 10. a radially extending ring; 11. a groove; 12. a boss; 13. an annular clamping groove; 14. a connecting cylinder; 15. an adjustment cover; 16. an inner cylinder; 17. an outer cylinder.
Detailed Description
In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.
In various embodiments of the present utility model, "proximal" and "distal" are relative orientations, relative positions, directions of elements or actions relative to one another from the perspective of a physician using the medical device, although "proximal" and "distal" are not intended to be limiting, and "proximal" generally refers to an end of the medical device that is proximal to the physician during normal operation, and "distal" generally refers to an end that is distal from the physician that first enters the patient.
Referring to fig. 1-4, an embodiment of the present utility model provides a cerebral angiography catheter device, which includes a sheath tube 1 and a guide wire 5 penetrating the sheath tube 1, and further includes a detachable adjusting mechanism, including a detachable tube body connected to a proximal end of the sheath tube 1, wherein a tube body channel 4 through which the guide wire 5 passes is provided on the tube body, the tube body includes an elastic deformation section 2, and an extrusion cylinder 3 is sleeved on the tube body, and the elastic deformation section 2 is deformed by a reciprocating motion of the extrusion cylinder 3 to adjust a passing resistance of the guide wire 5.
Specifically, as shown in fig. 1, the distal end of the sheath 1 (i.e., the end that enters the human body) is used for being placed in an artery, a guide wire 5 is formed inside the sheath 1 and enters an internal channel of the arterial vessel, a detachable adjusting mechanism is arranged at the proximal end of the sheath 1 (i.e., the end that is far away from the patient), the detachable adjusting mechanism can be loaded on the sheath 1 or detached from the sheath 1, a connecting mechanism 6 is arranged on the detachable adjusting mechanism, the tube body is connected with the sheath 1 through the connecting mechanism 6, and the connecting mechanism 6 can be detached after being connected with the sheath 1, the detachable adjusting mechanism is used for adjusting the guide wire 5 and the feeding resistance of the catheter, the detachable adjusting mechanism comprises a tube body 9 connected with the proximal end of the sheath 1, a tube body channel 4 through which the guide wire 5 passes is arranged on the tube body 9, when the tube body 9 is connected with the sheath 1, the tube body channel is communicated with the internal channel of the sheath tube 1, the tube body 9 comprises an elastic deformation section 2, the elastic deformation section 2 is made of soft elastic material, the elastic deformation section can elastically deform, the radial dimension of the tube body channel 4 at the inner side of the elastic deformation section 2 can be changed by extruding the soft elastic material, obviously, the radial dimension of the tube body channel 4 can give different passing resistances to the guide wire 5, the extrusion elastic deformation section 2 can adjust the resistance when the guide wire 5 passes through the tube body channel 4, the tube body 9 is connected with the proximal end of the sheath tube 1, the movement speed of the guide wire 5 when entering into an arterial vessel through the sheath tube 1 can be adjusted, the tube body 9 is sleeved with an extrusion cylinder body 3, the extrusion cylinder body 3 is sleeved on the tube body 9, namely the extrusion cylinder body 3 can axially move on the tube body 9, the extrusion cylinder body 3 is provided with a radial extension ring 10, the extending direction of the radial extending ring 10 extends towards the inner side of the extrusion barrel 3, the pipe body 9 is sleeved in the middle position of the radial extending ring 10, the extrusion barrel 10 is axially movably connected to the pipe body 9, namely, the extrusion barrel 3 can axially reciprocate on the outer wall of the pipe body, the effect that the extrusion barrel 3 is sleeved on the pipe body 9 is achieved by the arrangement that the extrusion barrel 3 can be manually pulled to axially move, the extrusion barrel 3 axially moves, meanwhile, the radial extending ring 10 on the extrusion barrel 3 axially moves to extrude the elastic deformation section 2, the elastic deformation section 2 is deformed inwards after being extruded, and therefore the radial dimension of the pipe body channel 4 is gradually reduced by the extrusion pipe body channel 4, at the moment, the resistance of the guide wire 5 when passing through the pipe body channel 4 is changed, and the effect of adjusting the resistance can be achieved.
In this embodiment, in order to enable the axial movement of the extrusion cylinder 3 to bring about the change in the radial dimension of the elastic deformation section 2, the outer wall of the elastic deformation section 2 is of a configuration in which the radial dimension gradually increases (from the proximal end to the distal end), such as a frustum shape, at which time the radially extending ring 10 gradually presses different portions of the elastic deformation section 2 when the extrusion cylinder 3 moves to achieve the adjustment of the radial dimension of the internal passage thereof.
In each embodiment of the present utility model, the tube body is connected to the sheath tube 1 through the connection mechanism 6, and the connection mechanism may be a detachable connection manner such as a screw connection, a clamping connection, an inserting connection, etc., where the connection manner is in the prior art and is not repeated.
According to the cerebral angiography catheter device provided by the embodiment of the utility model, the extrusion cylinder body 3 reciprocates to extrude the elastic deformation section 2, at the moment, the elastic deformation section 2 deforms towards the middle to gradually reduce the radial dimension of the catheter body, the guide wire 5 enters the sheath tube 1 after passing through the detachable adjusting mechanism, and when passing through the detachable adjusting mechanism, the elastic deformation section 2 can be extruded to adjust the internal channel of the catheter body so as to adjust the movement resistance when the guide wire 5 passes through.
In another embodiment provided by the utility model, as shown in fig. 2, further, a plurality of protruding parts 12 are arranged on the pipe body 9 along the axial direction, preferably, the protruding parts 12 are annular protruding parts and made of soft elastic materials, a plurality of grooves 11 are arranged on the inner wall of the extrusion barrel 3, preferably, four grooves 11 are arranged and are annular grooves 11, preferably, the intervals of the grooves 11 are equal, a plurality of protruding parts 12 are arranged in one-to-one correspondence with a plurality of grooves 11, the grooves 11 and the protruding parts 12 have elasticity, and the protruding parts 12 are annular protruding parts 12 and the grooves 11 are annular grooves 11, so that the protruding parts 12 can be separated from the corresponding grooves 11 when a tensile force is applied, and the protruding parts 12 have obvious blocking feeling when completely entering the grooves 11, so that operators have obvious handfeel. On the axial sliding travel of the extrusion barrel 3, the protruding part 12 on the pipe body 9 sequentially passes through each groove 11 on the extrusion barrel 3, when the protruding part 12 passes through the groove 11, obvious blocking feeling exists, so that an operator knows that the protruding part 12 passes through the groove 11, obviously, the protruding part 12 on the pipe body 9 firstly passes through the groove 11 near to the far end on the extrusion barrel 3, the extrusion degrees of the corresponding extrusion barrel 3 on the elastic deformation section 2 of the protruding part 12 in different grooves 11 are different, namely, the radial sizes of the pipe body channels 4 are different, and the radial sizes of the pipe body channels 4 when the protruding part 12 passes through the groove 11 near to the far end are larger than the radial sizes of the pipe body channels 4 when the protruding part 12 passes through the groove 11 near to the near end. The purpose of the projections 12 passing through the respective grooves 11 is that, when the pressing cylinder 3 is pulled to be stopped in the different grooves 11, the radial dimensions of the tube passages 4 are also different, and the radial dimensions of the different catheters and guide wires 5 are also different, so that the tube passages 4 corresponding to the guide wires 5 of different dimensions can also be different. This arrangement has the advantage that, firstly, the cooperation of the projections 12 with the grooves 11 defines the position of the extrusion cylinder so that the extrusion cylinder 3 does not slide by itself when the physician pulls the guide wire, resulting in a change in resistance, secondly, since the dimensions of the catheter and guide wire 5 with which each sheath 1 cooperates are known in advance, it is possible to determine in advance the position of the projections 12 with the grooves 11 on the basis of this actual requirement to give the appropriate resistance to the corresponding, for example, most distal groove 11 for the catheter and most proximal groove 11 for the guide wire, so that the resistance gear is actively set in advance for the catheter and guide wire 5, the operator can choose the tube channel 4 suitable for his own feel when using different guide wires 5 and catheters, more preferably, the extrusion cylinder 3 is pulled to the proximal groove 11 for closing the tube channel 4 of the detachable adjustment mechanism, in which case a backflow of blood through the sheath 1 can be prevented.
In still another embodiment of the present utility model, the tube body 9 is connected to the sheath tube 1 through the connection mechanism 6, and the connection mechanism 6 is also detachable after being connected to the sheath tube 1, the guide wire 5 and the catheter enter the sheath tube 1 through the detachable adjustment mechanism, the connection mechanism 6 includes a connection cylinder 14 disposed on the proximal end of the tube body 9, an annular protrusion 8 is disposed on the inner wall of the connection cylinder 14, an annular connection clamping groove 13 is disposed on the distal end of the sheath tube 1, the annular protrusion 8 and the annular connection clamping groove 13 are correspondingly clamped, the annular protrusion 8 is made of soft material, the annular connection clamping groove 13 is made of hard material, the connection cylinder 14 can be manually sleeved on the distal end of the sheath tube 1 and the annular protrusion 8 can be clamped into the annular connection clamping groove 13, at this time, the annular protrusion 8 can be clamped into the annular connection clamping groove 13, so as to connect the detachable adjustment mechanism and the sheath tube 1, and the annular protrusion 8 can be manually pulled to be separated from the annular connection clamping groove 13 due to the elastic connection can be realized, when the annular protrusion 8 is required to be detached from the detachable adjustment mechanism, and the annular protrusion 8 can be detached from the annular protrusion 1 through the annular protrusion clamping groove 13, and the annular protrusion can be detached from the annular connection clamping groove 1 through the annular protrusion 1.
In another embodiment provided by the utility model, further, the inner side of the distal end of the connecting cylinder 14 is provided with an elastic sealing part 7, and when the connecting cylinder 14 is sleeved on the sheath tube, the elastic sealing part 7 is tightly deformed and sleeved on the outer wall surface of the sheath tube 1, so that secondary sealing is realized.
In yet another embodiment provided by the utility model, as shown in fig. 4, the extruding cylinder 3 is sleeved on the pipe body, the extruding cylinder 3 comprises an inner cylinder 16 and an outer cylinder 17 which are sleeved on each other, one end of the outer cylinder 17 is provided with a radial extension ring 10, the extension direction of the radial extension ring 10 extends towards the inner side of the extruding cylinder 3, the radial extension ring 10 is attached to one end of the inner cylinder 16, the pipe body 9 is sleeved in the middle position of the radial extension ring 10, the outer cylinder 17 is sleeved on the far end of the inner cylinder 16, and because the extruding cylinder 3 is sleeved on the pipe body 9, the inner cylinder 16 can drive the outer cylinder 17 to synchronously move axially, the effect that the outer cylinder 17 is sleeved on the inner cylinder 16 is that the inner cylinder 16 can drive the outer cylinder 17 to move, the outer cylinder 17 can not drive the inner cylinder 16 to move when moving, the outer cylinder 17 can move along the axial direction of the pipe body 9 but not rotate on the pipe body 9, the corresponding rotation limiting mechanism is configured, for example, an axial bulge is arranged on the inner wall of the outer cylinder 17, an axial groove matched with the axial bulge is arranged on the inner cylinder 16, the axial bulge is connected in the axial groove in a sliding manner, so that the rotation limiting of the outer cylinder 17 can be realized, the outer cylinder 17 is forced to move only axially, an adjusting cover 15 is screwed above the inner cylinder 16 (one end close to the proximal end of the tube 9), the adjusting cover 15 is connected on the tube 9 in a rotating manner, namely, the adjusting cover 15 can only rotate on the tube 9 and can not move axially, because the adjusting cover 15 is screwed with the proximal end of the inner cylinder 16, when an operator rotates the adjusting cover 15, axial driving force can be generated when the screw thread rotates, and thus the adjusting cover 15 can drive the inner cylinder 16 and the outer cylinder 17 to move axially integrally, which is known as a common sense, not described in detail, the rotation adjusting cover 15 can drive the inner cylinder 16 to move along the axial direction, the inner cylinder 16 moves axially and drives the outer cylinder 17 to move axially, the radially extending ring 10 on the outer cylinder 17 can squeeze the elastic deformation section 2 in the axial moving process of the outer cylinder 17, and the elastic deformation section 2 after being subjected to the squeezing force deforms towards the middle, so that the radial dimension of the pipe body channel 4 can be adjusted.
Correspondingly, a plurality of protruding parts 12 are arranged on the inner cylinder 16 along the axial direction, a plurality of grooves 11 are arranged on the inner wall of the outer cylinder 17, the protruding parts 12 and the grooves 11 are made of soft elastic materials, a plurality of protruding parts 12 are arranged in one-to-one correspondence with a plurality of grooves 11, on the axial sliding stroke of the outer cylinder 17, the protruding parts 12 on the inner cylinder 16 sequentially pass through the grooves 11 on the outer cylinder 17, when the protruding parts 12 pass through the grooves 11, obvious click feeling exists, an operator knows that the protruding parts 12 pass through the grooves 11, the purpose of arranging the protruding parts 12 to pass through the grooves 11 is that when the extruding cylinder 3 is pulled manually to enable the protruding parts 12 to stay in different grooves 11, the radial sizes of the tube body channels 4 are different, the radial sizes of different guide pipes and guide wires 5 are also different, the tube body channels 4 corresponding to the guide wires 5 are also different, the coarse adjustment can be carried out on the tube channels 4, the operation personnel can rotate the caps in the directions corresponding to the grooves 11 of the guide wires or the two adjacent guide pipes, the operation personnel can rotate the caps in the directions, the radial adjustment of the tube channels 3 can be carried out, the radial adjustment of the tube channels 4 can be carried out, and the radial adjustment channels 3 are adjusted when the tube channels 3 are extruded, and the elastic channels 4 are adjusted, and the radial adjustment channels are adjusted, and the elastic channels are adjusted, and the tube channels are 2 are adjusted, and the elastic channels are in the radial channel are adjusted. At this time, coarse adjustment of the deformation of the elastic deformation section 2 is achieved by pulling the outer cylinder 17, and fine adjustment of the deformation of the elastic deformation section 2 is achieved by adjusting the cover 15.
In the most preferred embodiment provided by the utility model, the inner wall of the radial extension ring 10 and the outer wall of the elastic deformation section 2 are of structures with radial dimensions gradually reduced along the axial direction (from the far end to the near end), but the inner wall of the radial extension ring 10 and the outer wall of the elastic deformation section 2 are not cones but elliptical cones, namely, the inner wall of the radial extension ring 10 is an elliptical cone hole, the outer wall of the elastic deformation section 2 is an elliptical cone, but the inner part of the elastic deformation section 2 is a cylindrical hole, so that the wall thickness of the elastic deformation section 2 is uneven, the part positioned at the major axis of the ellipse is thicker, the part positioned at the minor axis of the ellipse is thinner, the parts are synchronous, the radial extension ring 10 is circumferentially attached to the opposite sides of the minor axis of the elliptical cone, three benefits are brought in such a way, firstly, a rotation limiting mechanism is omitted, the extrusion cylinder 3 can not rotate but can only axially move, secondly, the deformation directions of the elastic deformation section 2 are limited, so that the two side walls positioned at the two sides of the minor axis of the elliptical cone can be extruded to each other, the deformation directions can be easily controlled, and the radial deformation section 10 can be restored more conveniently.
While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.
Claims (8)
1. A cerebral angiographic catheter device comprising a sheath and a guidewire threaded into the sheath, further comprising:
the detachable adjusting mechanism comprises a tube body which can be detached and is connected with the proximal end of the sheath tube, a tube body channel for a guide wire to pass through is arranged on the tube body, the tube body comprises an elastic deformation section, an extrusion cylinder body is sleeved on the tube body, the elastic deformation section is extruded by the reciprocating motion of the extrusion cylinder body to deform so as to adjust the passing resistance of the guide wire,
the inner wall of the extrusion cylinder body is of a structure with the same radial dimension, the outer wall of the elastic deformation section is of a structure with the radial dimension gradually increasing from the proximal end to the distal end,
the extrusion cylinder body is provided with a radial extension ring, the extension direction of the radial extension ring extends towards the inner side of the extrusion cylinder body,
the inner wall of the radial extension ring and the outer wall of the elastic deformation section are of structures with radial sizes gradually becoming smaller along the axial direction, but the inner wall of the radial extension ring and the outer wall of the elastic deformation section are not cones but elliptic cones, namely the inner wall of the radial extension ring is an elliptic frustum, the outer wall of the elastic deformation section is an elliptic frustum, but the inside of the elastic deformation section is a cylindrical hole, so that the wall thickness of the elastic deformation section is uneven, the part positioned on the major axis of the ellipse is thicker, the part positioned on the minor axis of the ellipse is thinner, and the radial extension ring is in synchronous circumferential fit with the opposite sides of the minor axis of the elliptic frustum.
2. The cerebral angiography catheter device according to claim 1, wherein a plurality of grooves are formed in the inner wall of the extrusion cylinder, a plurality of protruding portions are formed in the tube body along the circumferential direction, and the protruding portions are slidably arranged in one-to-one correspondence with the grooves.
3. The cerebral angiographic catheter device of claim 2, wherein said boss passes through each of said grooves in turn on an axial stroke of said squeeze tube.
4. The cerebral angiography catheter device according to claim 2, wherein said grooves are provided with four grooves in the axial direction of said squeeze tube.
5. The cerebral angiography catheter device according to claim 1, wherein said elastically deformable section is a soft elastic material that is elastically deformable.
6. The cerebral angiography catheter device according to claim 1, wherein a connection mechanism is provided on the detachable adjustment mechanism.
7. The cerebral angiography catheter device according to claim 6, wherein the connecting mechanism comprises a connecting cylinder sleeved on the tube body, openings are formed in two sides of the connecting cylinder, connecting rods are connected in the openings through rotation, annular protrusions are arranged on the connecting rods, annular connecting clamping grooves are formed in the sheath tube, and the annular protrusions correspond to the annular connecting clamping grooves one by one.
8. The cerebral angiography catheter device according to claim 7, wherein said annular protrusion is an elastic material and said annular connecting clip groove is a hard material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211087681.0A CN115400323B (en) | 2022-09-07 | 2022-09-07 | Cerebral angiography catheter device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211087681.0A CN115400323B (en) | 2022-09-07 | 2022-09-07 | Cerebral angiography catheter device |
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| CN115400323A CN115400323A (en) | 2022-11-29 |
| CN115400323B true CN115400323B (en) | 2023-09-08 |
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| CN202211087681.0A Active CN115400323B (en) | 2022-09-07 | 2022-09-07 | Cerebral angiography catheter device |
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| CN116115307B (en) * | 2023-02-10 | 2023-09-22 | 河北康誉医疗器械有限公司 | Contrast guide wire device for controlling resistance |
| CN116271425B (en) * | 2023-02-28 | 2023-09-26 | 河北康誉医疗器械有限公司 | High stability guide catheter device |
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| JP2006523515A (en) * | 2003-04-16 | 2006-10-19 | ジェネシス・テクノロジーズ・エルエルシー | Medical devices and methods |
| CN204619123U (en) * | 2015-04-16 | 2015-09-09 | 中国人民解放军第二炮兵总医院 | Through right radial artery approach cerebral catheter |
| CN105769268A (en) * | 2015-11-16 | 2016-07-20 | 深圳市擎源医疗器械有限公司 | Brain retractor |
| CN207785590U (en) * | 2017-03-03 | 2018-08-31 | 赵泽驹 | Medical cavity scope punctures impregnator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006523515A (en) * | 2003-04-16 | 2006-10-19 | ジェネシス・テクノロジーズ・エルエルシー | Medical devices and methods |
| CN204619123U (en) * | 2015-04-16 | 2015-09-09 | 中国人民解放军第二炮兵总医院 | Through right radial artery approach cerebral catheter |
| CN105769268A (en) * | 2015-11-16 | 2016-07-20 | 深圳市擎源医疗器械有限公司 | Brain retractor |
| CN207785590U (en) * | 2017-03-03 | 2018-08-31 | 赵泽驹 | Medical cavity scope punctures impregnator |
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