CN119280647A - A conical conduit connector - Google Patents
A conical conduit connector Download PDFInfo
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- CN119280647A CN119280647A CN202411614539.6A CN202411614539A CN119280647A CN 119280647 A CN119280647 A CN 119280647A CN 202411614539 A CN202411614539 A CN 202411614539A CN 119280647 A CN119280647 A CN 119280647A
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- Prior art keywords
- catheter
- cannula
- infusion
- connector
- tapered
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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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
-
- 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
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M39/1011—Locking means for securing connection; Additional tamper safeties
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M39/105—Multi-channel connectors or couplings, e.g. for connecting multi-lumen tubes
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M2039/1038—Union screw connectors, e.g. hollow screw or sleeve having external threads
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Pulmonology (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
本申请公开了一种锥形导管接头，用于与麻醉导管连接，包括插管接头，具有沿轴线方向部分延伸的锥形内腔；弹性件，具有锥形周面且通过锥形周面套接于所述锥形内腔中；弹性件沿轴线方向开设有插接导管的安装孔；输液接头，可拆卸连接于插管接头，用于与输液器连接；当插管接头与输液接头处于组装连接状态时，输液接头能够被构造成给予弹性件轴向压缩力，以使得弹性件在锥形内腔朝向导管一侧滑移且朝向锥形内腔的壁面膨胀，使得弹性件径向尺寸增大而安装孔孔径缩小以锁紧导管；弹性件同步旋转，导管接头中插管接头与输液接头旋合过程中，不会因为医护人员不同力度和速度不同导致的至少某一段出现的扭结以及变细，避免压扁导管。
The present application discloses a tapered catheter connector for connecting with an anesthesia catheter, comprising a cannula connector having a tapered inner cavity partially extending along an axial direction; an elastic member having a tapered circumferential surface and being sleeved in the tapered inner cavity through the tapered circumferential surface; the elastic member is provided with a mounting hole for inserting the catheter along the axial direction; an infusion connector is detachably connected to the cannula connector for connecting with an infusion device; when the cannula connector and the infusion connector are in an assembled connection state, the infusion connector can be configured to give an axial compression force to the elastic member, so that the elastic member slides toward one side of the catheter in the tapered inner cavity and expands toward the wall of the tapered inner cavity, so that the radial size of the elastic member increases and the aperture of the mounting hole decreases to lock the catheter; the elastic member rotates synchronously, and during the screwing process of the cannula connector and the infusion connector in the catheter connector, kinking and thinning of at least a certain section due to different strengths and speeds of medical staff will not occur, thereby avoiding flattening of the catheter.
Description
Technical Field
The application belongs to the technical field of catheter assembly, and particularly relates to a conical catheter connector.
Background
Large-size catheter connectors are typically bonded or welded directly to the tip portion of the catheter by the manufacturer prior to shipment. However, the small-size catheter or the microminiature catheter is used because of the structures such as penetration, penetration of a needle cavity or penetration and penetration of a cavity mirror cavity, for example, epidural nerve blocking, and has the advantages of simple operation, low cost, easy penetration and penetration of a pipeline in operation and convenient epidural pain relieving after operation, which become an anesthesia method widely applied clinically, the outer diameter of the adopted anesthesia catheter is generally not more than 1mm in the application process, and the needle cavity channel of the epidural needle is required to enter the epidural cavity in the use process because the anesthesia catheter is too soft and has no sharp needle end, then the epidural needle can exit along the tube body of the whole anesthesia catheter after the epidural needle is in place, and medical workers can connect the catheter connector to the anesthesia catheter after the epidural needle is completely withdrawn, so that similar small-size catheters or microminiature catheters cannot be directly connected with the end part of the larger-size catheter connector and the catheter by a manufacturing enterprise before leaving factories in the practical application field. When medical personnel connect by hand, a plurality of problems can appear:
Most of the catheter joints wrap the catheter by the cylindrical elastic piece, the inner diameter of the cylindrical elastic piece is reduced by the rotary extrusion effect when the catheter joints are connected by a doctor, so that the catheter is tightly wrapped, the inner diameter of the elastic piece is usually larger for facilitating the doctor to insert the catheter into the inner cavity of the elastic piece serving as the catheter joints, the elastic piece is required to be rotated for a plurality of circles to be locked when the doctor operates, and the cylindrical elastic piece is likely to have a certain section of kinking or suddenly thinning phenomenon due to different doctor operating force and speeds in the screwing process, so that the catheter is blocked in the elastic piece due to kinking or local clamping;
Although the former generation products reduce the probability of blocking the conduit by increasing the screw pitch of the screw threads or increasing the limit device and the like, the structure is too complex, the production difficulty and the production cost are increased, the conduit with fixed size can only be tried out, the locking effect of the conduit with larger or smaller outer diameter is very poor, the conduit is easily pulled out from the conduit connector under the action of external force, and the actual locking effect cannot be seen because the conduit connector is not transparent.
Disclosure of Invention
The application provides a conical catheter connector, which aims to solve the problems that in the process of connecting a rotating catheter connector of medical staff with a catheter, the rotating catheter connector needs to rotate for a plurality of circles to be locked, the elastic piece is twisted due to different forces in the screwing process, so that the catheter is clamped or blocked and cannot be used, the production difficulty and the manufacturing cost are increased by the existing methods such as increasing threads, and the like, and the conical catheter connector is only suitable for fixed dimensions, so that the outer diameter is larger or smaller, and cannot be locked, and has a small application range.
The technical scheme adopted by the application is as follows:
A tapered catheter adapter for connection to a catheter for anesthesia, comprising:
A cannula fitting having a tapered lumen extending partially in an axial direction;
The elastic piece is provided with a conical peripheral surface and sleeved in the conical inner cavity through the conical peripheral surface, and is provided with a mounting hole for inserting the catheter along the axial direction;
the infusion connector is detachably connected with the cannula connector and is used for being connected with an infusion apparatus;
When the cannula fitting and the infusion fitting are in an assembled connection state, the infusion fitting can be configured to impart an axial compressive force to the resilient member such that the resilient member slides on the tapered lumen toward the catheter side and expands toward the wall of the tapered lumen such that the resilient member increases in radial dimension and the mounting hole reduces in aperture to lock the catheter.
The conical catheter adapter of the application also has the following additional technical features:
The elastic piece is in a bullet shape, the shape of the conical inner cavity is matched with that of the elastic piece, so that the elastic piece is sleeved in the conical inner cavity, the elastic piece is provided with a thin end facing the catheter along the axial direction and a thick end which is opposite to the thin end and used for being compressed by the infusion connector, and the radial size from one side of the thin end to one side of the thick end of the elastic piece is gradually increased.
The inner wall surface of the mounting hole of the elastic piece is provided with a plurality of elastic barbs along the axial direction, the elastic barbs are distributed at intervals or non-intervals along the circumferential direction of the mounting hole, and the elastic barbs incline towards one side of the infusion connector so as to limit the guide pipe inserted in the mounting hole to slide towards the thin end to generate separation movement.
The cannula hub having a proximal end forming a cannula end for connection with the catheter and a distal end forming a connection end for mating with the infusion hub;
The cannula end has a first port facing the catheter, the first port being configured to receive the catheter therethrough, the connecting end has a tapered lumen therein, the tapered lumen has a communication hole open toward the proximal end side, and the first port communicates with the tapered lumen through the communication hole.
The projection of the first port along the radial direction of the cannula joint is in a horn-shaped structure, and the opening inner diameter size from the proximal section of the first port towards the proximal end of the cannula joint to the distal section of the first port towards the distal end of the cannula joint is gradually reduced;
the distal section opening of the first port corresponds to the mounting hole, and the distal section opening inner diameter of the first port is not smaller than the mounting hole inner diameter.
The infusion connector is provided with a matching end which is matched and connected with the cannula connector and an infusion end which is matched and connected with the infusion device, wherein the matching end is provided with a first connecting part which is detachably connected with the outer side of the cannula connector and a second connecting part which extends into the conical inner cavity and can be abutted against and compress the elastic piece.
An annular cavity is formed between the first connecting part and the second connecting part along the radial direction, an inner thread is arranged on the inner wall of the first connecting part in the annular cavity, an outer thread is arranged on the periphery of the far end of the cannula joint, when the cannula joint and the infusion joint are in an assembled connection state, the outer thread of the cannula joint and the inner thread of the infusion joint are mutually screwed, and the second connecting part can partially extend into the conical inner cavity.
The second connecting part extends along the axial direction of the infusion connector to form a jacking end for compressing the elastic piece, a butt joint hole penetrating through the jacking end is formed in the second connecting part along the axial direction, and the butt joint hole is communicated with the mounting hole to form a conduction channel of the guide catheter.
The periphery of the second connecting part along the axis direction is provided with a plurality of clamping point bulges, the clamping point bulges are used for being abutted against the inner wall of the conical inner cavity when the second connecting part stretches into the conical inner cavity, or the outer side of the second connecting part is provided with clamping point bulge loops which are arranged in a whole circle, and the clamping point bulge loops are used for being abutted against the inner wall of the conical inner cavity when the second connecting part stretches into the conical inner cavity.
The cannula joint, the elastic piece and at least part of the infusion joint are made of transparent materials, the cannula joint and the infusion joint are made of hard materials, and the elastic piece is made of soft elastic materials.
By adopting the technical scheme, the application has the following beneficial effects:
1. The conical catheter connector is used for being connected with an anesthetic catheter and comprises an intubation connector, an elastic piece and an infusion connector, wherein the intubation connector is provided with a conical inner cavity which extends partially along the axis direction, the elastic piece is required to be sleeved in the conical inner cavity when in use, a mounting hole for inserting the catheter is formed in the elastic piece along the axis direction, and the catheter is required to be inserted into the insertion mounting hole when in use, so that the assembly of the catheter and the catheter connector is realized;
The elastic piece is provided with a conical peripheral surface and is sleeved in the conical inner cavity through the conical peripheral surface, when the cannula connector and the infusion connector are screwed, the phenomenon that the rotation of the infusion connector and the rotation of the cannula connector do not affect the phenomenon that the elastic piece in the cannula connector is twisted or knotted, because the inner diameter of the small end of the conical peripheral surface is smaller than that of the large end of the elastic piece, when the infusion connector is abutted to the elastic piece, the elastic piece can synchronously rotate along with the infusion connector due to the fact that one end of the elastic piece is smaller in radial size and can not be clamped in the conical inner cavity, the phenomenon that one end of the elastic piece, which is abutted to the infusion connector, rotates is avoided, and the other end, which is not abutted to the infusion connector, is not moved after being positioned by the conical inner cavity, is not generated, and causes the phenomenon that the elastic piece is locally twisted or knotted under different speeds of medical staff.
In addition, when the cannula hub and the infusion hub are in an assembled connection, the infusion hub can be configured to impart an axial compressive force to the resilient member such that the resilient member slides in the tapered lumen toward the catheter side and expands toward the wall of the tapered lumen such that the resilient member increases in radial dimension and the mounting hole aperture decreases to lock the catheter.
2. As a preferred embodiment of the application, the elastic element is in a bullet shape, the shape of the conical inner cavity is matched with that of the elastic element, so that the elastic element is sleeved in the conical inner cavity, the elastic element is provided with a thin end facing the catheter along the axial direction and a thick end which is arranged opposite to the thin end and is used for being compressed by the infusion connector, and the radial dimension from the thin end side to the thick end side of the elastic element is gradually increased.
The elastic piece is preferably in a bullet shape, the thin end and the thick end of the elastic piece are positioned at two ends of the elastic piece along the axial direction, wherein the inner diameter of the thin end is smaller than the inner diameter of the thick end, the thin end is positioned in the conical inner cavity and faces the catheter, the thick end is positioned in the conical inner cavity and faces the infusion connector, a mounting hole is formed between the thin end and the thick end, the catheter is required to be extended to the thick end through the thin end during use, the catheter is fixedly mounted in the elastic piece, the catheter is further elastically connected through the elastic piece in the conical inner cavity, the flexible structure of the catheter is protected, the catheter can be flexibly positioned in the catheter connector, the catheter can be tightly fixed on the periphery of the catheter under the elastic acting force of the elastic piece when the catheter is bigger or smaller, and therefore the connection strength between the catheter connector and the catheter is enhanced, and the adaptation degree of the catheters with different sizes is improved.
3. As a preferable implementation mode of the application, a plurality of elastic barbs are formed on the inner wall surface of the mounting hole of the elastic piece along the axial direction, the elastic barbs are distributed at intervals or non-intervals along the circumference of the mounting hole, and the elastic barbs incline towards one side of the infusion connector so as to limit the guide pipe inserted in the mounting hole to slide towards the thin end to generate disengaging movement.
The utility model discloses a catheter, including the mounting hole of elastic component, be provided with the purpose of a plurality of elasticity barb that extend along the axis direction in the mounting hole, can be after the pipe is pegged graft in the mounting hole, the pipe is owing to extend at the axis direction of mounting hole, when the pipe had the trend of moving towards the proximal end under the pulling force effect, a plurality of elasticity barbs of circumference all expand towards the axle center, elasticity barb can butt in the outer wall of pipe limit pipe towards intubate joint one side removal, thereby realize that the pipe can only follow the fine end to the thick end and can not follow the thick end to the fine end removal in the elastic component, thereby can further lock the pipe, avoid the pipe to break away from the elastic component under the exogenic action, increase the locking force between pipe and the intubate joint.
4. As a preferred embodiment of the application, the cannula connector has a proximal end and a distal end, the proximal end forming a cannula end for connection with a catheter and the distal end forming a connection end for mating with an infusion connector, the cannula end having a first port facing the catheter, the first port being configured to receive the catheter therethrough, the connection end having a tapered lumen therein, the tapered lumen having a communication hole opening on a side thereof facing the proximal end, the first port being in communication with the tapered lumen via the communication hole.
The intubate end that intubate connects is used for being connected with the pipe, the link that intubate connects is used for being connected with infusion connects, the intubate end is provided with first mouth hole, the link sets up the toper inner chamber, the toper inner chamber has the intercommunicating pore, the intercommunicating pore is with the purpose that first mouth hole is linked together, realize in the mounting hole of the elastic component in the intubate joint then get into the toper inner chamber through the intercommunicating pore with the pipe, the pipe passes through first mouth hole in proper order, intercommunicating pore and mounting hole increase the installation path length of pipe for the pipe is fully fixed a position along the axis direction, thereby reinforcing joint strength and locking dynamics between pipe and the intubate connect.
5. As a preferred embodiment of the application, the projection of the first orifice along the radial direction of the adapter plug is in a horn-shaped structure, the opening inner diameter dimension of the first orifice from the proximal section of the proximal end of the cannula joint to the distal section of the first orifice toward the distal end of the cannula joint is gradually reduced, the distal section opening of the first orifice corresponds to the mounting hole, and the opening inner diameter of the distal section of the first orifice is not smaller than the inner diameter of the mounting hole.
The first port hole is in a horn-shaped structure, the first port hole is provided with a proximal section facing the proximal end of the cannula connector and a distal section facing the distal end of the cannula connector, the inner diameter of an opening from the proximal section to the distal section is gradually reduced, the horn-shaped large opening of the proximal section is convenient for a hand to approach the first port hole, the end part of a hand holding catheter is inserted into the opening of the proximal section, the catheter is conveniently and smoothly inserted into the horn-shaped opening, sufficient movable space can be provided for hand movement, and the horn-shaped first port hole has an inner arc surface which can guide the inserted catheter, so that even if a medical staff does not concentrate on the catheter to enter the insertion hole along the axial direction of the insertion hole, the medical staff can be smoothly guided into the insertion hole under the guiding action of the inner arc surface.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic view of the overall structure of a tapered catheter adapter in accordance with one embodiment of the present application;
FIG. 2 is a schematic illustration of the configuration of a cannula fitting of a tapered catheter fitting in accordance with an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of a cannula fitting of a tapered catheter fitting in accordance with an embodiment of the application;
FIG. 4 is a schematic illustration of an infusion set of a tapered catheter adapter in accordance with an embodiment of the present application;
FIG. 5 is a schematic cross-sectional view of an infusion set of a tapered catheter hub in accordance with an embodiment of the application;
FIG. 6 is a schematic view of the structure of an elastic member of a tapered catheter adapter in accordance with an embodiment of the present application;
In the drawing the view of the figure,
1. The infusion tube comprises a cannula connector, 2, an elastic piece, 3, an infusion connector, 4, a conical inner cavity, 5, a mounting hole, 6, an elastic barb, 7, a cannula end, 8, a connecting end, 9, a first orifice, 10, a communication hole, 11, a matching end, 12, an infusion end, 13, a first connecting part, 14, a second connecting part, 15, an annular cavity, 16, a jacking end, 17, a butt joint hole, 18, a clamping point protrusion, 19, a first lug, 20, a second lug, 21, a conical hole, 22 and a bump.
Detailed Description
In order to more clearly illustrate the general inventive concept, a detailed description is given below by way of example with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited to the specific embodiments disclosed below.
In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or in communication, directly connected, or indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, the descriptions of the terms "implementation," "embodiment," "one embodiment," "example," or "particular example" and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The application relates to a conical catheter connector, which is used for connecting with an anesthetic catheter, as shown in fig. 1-6, and comprises a cannula connector 1, an elastic piece 2 and an infusion connector 3, wherein the cannula connector 1 is provided with a conical inner cavity 4 which extends partially along the axial direction, the elastic piece 2 is provided with a conical peripheral surface and is sleeved in the conical inner cavity 4 through the conical peripheral surface, the elastic piece 2 is provided with a mounting hole 5 for inserting the catheter along the axial direction, the infusion connector 3 is detachably connected with the cannula connector 1 and is used for connecting with the infusion apparatus, when the cannula connector 1 and the infusion connector 3 are in an assembled and connected state, the infusion connector 3 can be configured to give axial compression force to the elastic piece 2 so that the elastic piece 2 slides towards one side of the catheter and expands towards the wall surface of the conical inner cavity 4, the radial dimension of the elastic piece 2 is increased, and the aperture of the mounting hole 5 is reduced to lock the catheter.
The application relates to a conical catheter joint, wherein a cannula joint 1 is provided with a conical inner cavity 4 which extends partially along the axial direction, an elastic piece 2 is required to be sleeved in the conical inner cavity 4 when in use, a mounting hole 5 for inserting a catheter is formed in the elastic piece 2 along the axial direction, and the catheter is required to be inserted into the insertion mounting hole 5 to realize the assembly of the catheter and the catheter joint when in use;
Because the elastic piece 2 is provided with a conical peripheral surface and is sleeved in the conical inner cavity 4 through the conical peripheral surface, when the cannula joint 1 and the infusion joint 3 are screwed, the rotation of the infusion joint 3 and the rotation of the cannula joint 1 do not influence the phenomenon of twisting or knotting of the elastic piece 2 in the cannula joint 1, and because the elastic piece 2 is provided with the conical peripheral surface, the inner diameter size of the small end is smaller than that of the large end, when the infusion joint 3 is abutted against the elastic piece 2, the radial size of one end of the elastic piece 2 is smaller and can not be blocked in the conical inner cavity 4 but can synchronously rotate along with the infusion joint 3; the application can avoid the phenomenon that the elastic element 2 is partially twisted or integrally knotted under different acting forces or different speeds of medical staff due to the fact that one end of the elastic element 2, which is abutted against the infusion connector 3, rotates, and the other end, which is not abutted against the infusion connector 3, is positioned by the conical inner cavity 4, while the application can avoid the phenomenon that the guide tube inserted in the mounting hole 5 of the elastic element 2 is flattened and blocked due to the knotting of the traditional elastic element 2, the elastic element 2 can synchronously rotate along with the driving of the cannula connector 1 or the infusion connector 3, further, the elastic element can not continuously rotate only after the conical circumferential surface of the elastic element is tightly connected with the inner wall of the cannula connector in the screwing process, but also can not generate the phenomenon of knotting due to the different forces and speeds of the medical staff in the connecting process of the catheter connector 1 and the infusion connector 3, thereby ensuring that the guide tube can always keep smooth, thereby facilitating the smooth operation.
Further, when the cannula hub 1 and the infusion hub 3 are in an assembled and connected state, the infusion hub 3 can be configured to give an axial compressive force to the elastic member 2 so that the elastic member 2 slides toward the catheter side in the tapered inner cavity 4 and expands toward the wall surface of the tapered inner cavity 4, so that the radial dimension of the elastic member 2 increases and the aperture of the mounting hole 5 is reduced to lock the catheter.
As a preferred embodiment, the elastic member 2 is in a bullet shape, the shape of the conical inner cavity 4 is matched with the shape of the elastic member 2 so that the elastic member 2 is sleeved in the conical inner cavity 4, the elastic member 2 is provided with a thin end facing the catheter along the axial direction and a thick end which is arranged opposite to the thin end and is used for being compressed by the infusion connector 3, and the radial dimension from the thin end side to the thick end side of the elastic member 2 is gradually increased.
The conical inner cavity 4 is required to be matched with the shape of the elastic piece 2, so that the elastic piece 2 can be tightly attached to the conical inner cavity 4, and the positioning of the elastic piece 2 and the fixing of a catheter are realized, the elastic piece 2 is preferably in a bullet shape, the thin end and the thick end of the elastic piece 2 are positioned at two ends of the elastic piece 2 along the axial direction, the inner diameter of the thin end is smaller than the inner diameter of the thick end, the thin end is positioned in the conical inner cavity 4 and faces the catheter, the thick end is positioned in the conical inner cavity 4 and faces the infusion connector 3, and a mounting hole 5 is formed between the thin end and the thick end;
During the use, need extend the pipe through the thin end to the thick end to realize with pipe fixed mounting in elastic component 2, further elastic connection pipe through the elastic component 2 in the toper inner chamber 4, both protect the flexible structure of pipe, make the pipe can flexible location in the catheter connection, can realize again that the pipe is bigger or when getting smaller all can hug closely in the periphery of pipe under the elastic effort of elastic component 2 and fix, thereby strengthen the joint strength between pipe connection and the pipe and improved the adaptation degree of the pipe of equidimension.
As a preferred embodiment, the inner wall surface of the mounting hole 5 of the elastic member 2 is formed with a plurality of elastic barbs 6 along the axial direction, the elastic barbs 6 incline towards one side of the infusion connector 3, and the elastic barbs 6 are distributed at intervals or non-intervals along the circumference of the mounting hole 5 so as to limit the sliding of the catheter inserted into the mounting hole 5 towards the tip to generate the disengaging movement.
The purpose that is provided with many elasticity barb 6 that extend along the axis direction in the mounting hole 5 of elastic component 2 is, can be after the pipe is pegged graft in mounting hole 5, the pipe is owing to extend at the axis direction of mounting hole 5, the pipe if there is the trend towards proximal movement under the pulling force effect, elasticity barb 6 can be towards the outer wall that axle center expansion elasticity barb 6 can the butt in the pipe, can restrict the pipe and produce the removal towards intubate joint 1 one side, thereby realize that the pipe can only follow the fine end to the thick end and can not follow the thick end to remove towards the fine end in elastic component 2, realize further locking pipe, avoid the pipe to break away from in elastic component 2 under the exogenic action, increase the locking force between pipe and the intubate joint 1.
As a preferred embodiment, as shown in figure 3, the cannula hub 1 has a proximal end and a distal end, the proximal end forming a cannula end 7 for connection with a catheter and the distal end forming a connection end 8 for mating with the infusion hub 3, the cannula end 7 having a first port 9 towards the catheter, the first port 9 being configured to receive the catheter therethrough, the connection end 8 having a tapered lumen 4 therein, the tapered lumen 4 having a communication hole 10 open on a proximal side thereof, the first port 9 being in communication with the tapered lumen 4 via the communication hole 10.
The cannula end 7 of the cannula fitting 1 is used for being connected with a catheter, the connecting end 8 of the cannula fitting 1 is used for being connected with the infusion fitting 3, the cannula end 7 is provided with a first orifice 9, the connecting end 8 is provided with a conical inner cavity 4, the conical inner cavity 4 is provided with a communication hole 10, the purpose that the communication hole 10 is communicated with the first orifice 9 is achieved, when the catheter enters the cannula fitting 1 from the first orifice 9 and then enters the mounting hole 5 of the elastic piece 2 in the conical inner cavity 4 through the communication hole 10, the length of the mounting path of the catheter is increased through the first orifice 9, the communication hole 10 and the mounting hole 5 in sequence, so that the catheter is sufficiently positioned along the axial direction, and the connection strength and the locking strength between the catheter and the cannula fitting 1 are enhanced.
Further, the projection of the first port hole 9 along the radial direction of the adapter plug is in a horn-shaped structure, the opening inner diameter dimension from the proximal section of the first port hole 9 towards the proximal end of the cannula joint 1 to the distal section of the first port hole 9 towards the distal end of the cannula joint 1 is gradually reduced, the distal section opening of the first port hole 9 corresponds to the mounting hole 5, and the distal section opening inner diameter of the first port hole 9 is not smaller than the inner diameter of the mounting hole 5.
The first port 9 is in a horn-shaped structure, so that the first port 9 is provided with a proximal section facing the proximal end of the cannula connector 1 and a distal section facing the distal end of the cannula connector 1, the inner diameter of an opening from the proximal section to the distal section is gradually reduced, the horn-shaped large opening of the proximal section is convenient for a hand to approach the first port 9, the end of the hand holding the catheter is inserted into the opening of the proximal section, the catheter is convenient to be smoothly inserted, and the horn-shaped opening can provide sufficient activity space for hand activity.
The manner of assembling the cannula hub 1 and the infusion hub 3 is not particularly limited to the present application, and any of the following embodiments may be adopted:
According to the first embodiment, the outer periphery of the far end of the cannula joint 1 is provided with external threads, one end of the infusion joint 3 is provided with internal threads, and the external threads of the cannula joint 1 are connected with the internal threads of the infusion joint 3, so that the infusion joint 3 can be detachably connected to the outer side of the cannula joint 1.
The distal end is denoted as the end remote from the catheter and the proximal end is denoted as the end near the catheter.
As shown in fig. 1 and 3, the distal end outer periphery of the cannula connector 1 is provided with an external thread, and the infusion connector 3 is provided with an internal thread, and the infusion connector 3 is connected to the outer periphery of the cannula connector 1 by screwing the internal thread of the infusion connector 3 to the external thread of the cannula connector 1.
In the second embodiment, a clamping groove is formed in the periphery of the distal end of the cannula connector 1, a buckle is arranged at one end of the infusion connector 3, and the clamping groove is matched with the buckle, so that the infusion connector 3 can be detachably connected to the outer side of the cannula connector 1.
The following two examples can be employed in this embodiment:
In the embodiment 1, the outer periphery of the distal end of the cannula joint 1 is provided with a clamping groove along the axial direction, the shape of the clamping groove can be square, circular arc or semicircular, the clamping groove is not limited in particular, the inner wall of the infusion joint 3 is protruded from the inner wall of the infusion joint 3, the clamping groove is matched with the clamping groove in shape, and the clamping groove corresponds to the clamping groove in position. When in use, the infusion connector 3 is sleeved on the outer side of the cannula connector 1 along the axial direction, and the buckle is butted with the corresponding clamping groove, so that the infusion connector 3 is matched and connected with the cannula connector 1.
In the embodiment 2, the outer periphery of the distal end of the cannula connector 1 is provided with a clamping groove, the clamping groove comprises a first clamping groove along the circumferential direction and a second clamping groove along the axial direction, the first clamping groove is communicated with the second clamping groove, the infusion connector 3 is provided with a buckle matched with the first clamping groove and the second clamping groove, when in use, the infusion connector 3 moves to the outer side of the cannula connector 1 along the axial direction, the buckle on the infusion connector 3 moves from the second clamping groove along the extending direction of the second clamping groove, namely moves along the axial direction of the cannula connector 1, then when the buckle moves to the tail end of the second clamping groove, the infusion connector 3 rotates around the axial direction of the cannula connector 1, so that the clamping groove continues to move to the tail end of the first clamping groove, and in addition, a groove is further arranged at the tail end of the first clamping groove, and can be matched with the buckle, so that the buckle is buckled in the groove, and the infusion connector 3 is connected with the cannula connector 1 in a positioning way.
Further, as shown in fig. 2 and 3, first lugs 19 are symmetrically arranged on the outer periphery of the cannula connector 1 along the radial direction, so that a medical staff can conveniently rotate the cannula connector 1 through the first lugs 19 to enable the cannula connector 1 to be in threaded connection with the infusion connector 3.
As a preferred embodiment, the infusion connector 3 is provided with a matching end 11 matched and connected with the cannula connector 1 and an infusion end 12 matched and connected with an infusion apparatus, and the matching end 11 is provided with a first connecting part 13 detachably connected with the outer side of the cannula connector 1 and a second connecting part 14 which extends into the conical inner cavity 4 and can abut against and compress the elastic piece 2.
As shown in fig. 4 and 5, the infusion connector 3 is provided with a matching end 11 and an infusion end 12 which are oppositely arranged, the matching end 11 is used for being connected with the cannula connector 1, the infusion end 12 is used for being connected with an infusion apparatus, preferably, the matching end 11 and the infusion end 12 are connected to form a T-shaped structure, the radial dimension of the matching end 11 is matched with the outer diameter dimension of the connecting end 8 of the cannula connector 1, the matching end 11 of the infusion connector 3 is provided with a first connecting part 13 and a second connecting part 14 which are coaxially arranged, the first connecting part 13 forms the outer edge of the matching end 11 and is in a circular ring structure, the second connecting part 14 is arranged inside the first connecting part 13 and is in a columnar structure, when the infusion connector 3 is assembled with the cannula connector 1, the first connecting part 13 is sleeved outside the connecting end 8 of the cannula connector 1, the second connecting part 14 enters into the conical inner cavity 4 in the connecting end 8 to abut against the compression elastic piece 2, the elastic piece 2 is compressed and expanded transversely, the radial dimension is increased, and the dimension of the mounting hole 5 is reduced, so that the inner Zhou Suojin of the mounting hole 5 is used for connecting the infusion connector 3 with the cannula 1 and the positioning connector 1.
Further, an annular cavity 15 is formed by leaving a gap between the first connecting part 13 and the second connecting part 14 along the radial direction, an inner thread is arranged on the inner wall of the first connecting part 13 in the annular cavity 15, an outer thread is arranged on the periphery of the far end of the cannula joint 1, when the cannula joint 1 and the infusion joint 3 are in an assembled connection state, the outer thread of the cannula joint 1 and the inner thread of the infusion joint 3 are mutually screwed, and the second connecting part 14 can partially extend into the conical inner cavity 4.
The first connecting part 13 and the second connecting part 14 are provided with a reserved gap along the radial direction, so that an annular cavity 15 is formed between the first connecting part 13 and the second connecting part 14, the inner wall of the first connecting part 13 is provided with internal threads, the connecting end 8 of the cannula joint 1 is provided with external threads, the first connecting part 13 is sleeved outside the connecting end 8 of the cannula joint 1 through the threaded connection of the internal threads of the first connecting part 13 and the external threads of the connecting end 8 of the cannula joint 1, part of the structure of the second connecting part 14 can partially extend into the conical cavity 4, can abut against the elastic piece 2 and continuously move into the conical cavity 4 in the continuous screwing process of the first connecting part 13 and the connecting end 8 of the cannula joint 1, so that the elastic piece 2 is fully compressed, and the catheter is fastened and locked.
Further, the second connecting portion 14 extends along the axial direction of the infusion connector 3 to form a top-in end 16 for compressing the elastic member 2, a butt hole 17 penetrating the top-in end 16 is formed in the second connecting portion 14 along the axial direction, and the butt hole 17 is communicated with the mounting hole 5 to form a conduction channel for guiding the catheter.
As shown in fig. 5, the first connecting portion 13 has a circular ring structure, and the second connecting portion 14 is located in the first connecting portion 13 and extends to the cannula connector 1 side along the central axis direction of the infusion connector 3 to form a top-in end 16 for compressing the elastic member 2, and the leftmost end surface of the second connecting portion 14 shown in fig. 4 is the top-in end 16.
In order to realize quick locking of the catheter, the length of the second connecting part 14 extending along the axial direction of the infusion connector 3 is longer than the length of the first connecting part 13 along the axial direction of the infusion connector 3, so that the end face of the jacking end 16 protrudes out of the end face of the first connecting part 13, when the first connecting part 13 is in threaded connection with the outer side of the connecting end 8of the cannula connector 1, the jacking end 16 contacts the cannula connector 1 before the end face of the first connecting part 13, and the jacking end 16 can perform primary compression on the elastic piece 2 when the first connecting part 13 is not in contact with the connecting end 8of the cannula connector 1;
When the first connecting portion 13 starts to be in threaded connection with the connecting end 8 of the cannula connector 1, the jacking end 16 can continuously move towards the elastic piece 2 in the screwing process of the infusion connector 3, so that further compression of the elastic piece 2 is achieved, after the first connecting portion 13 is in locking connection with the connecting end 8 of the cannula connector 1, the jacking end 16 stops compressing of the elastic piece 2, and therefore the elastic piece 2 is positioned in the conical inner cavity 4 by the inner wall of the conical inner cavity 4 and the jacking end 16, the elastic piece 2 can expand in the conical inner cavity 4, the radial size is increased, but the inner diameter size of the mounting hole 5 is reduced, and therefore a catheter in the mounting hole 5 is positioned, and the catheter is locked in the mounting hole 5.
When the infusion connector 3 is connected with the cannula connector 1, the butt joint hole 17 penetrating through the second connecting part 14 of the infusion connector 3 along the axial direction can correspond to the mounting hole 5 to form a conducting channel for guiding a catheter, the infusion end 12 of the infusion connector 3 is provided with a taper hole 21, the taper hole 21 is used for plugging an infusion apparatus, the butt joint hole 17 can also be communicated with the taper hole 21, and therefore liquid medicine in the infusion apparatus in the taper hole 21 can flow into the catheter in the conducting channel through the taper hole 21.
Further, the second connecting portion 14 has a plurality of snap-point protrusions 18 along the outer circumference of the axial direction, the snap-point protrusions 18 are used for being abutted against the inner wall of the conical inner cavity 4 when the second connecting portion 14 stretches into the conical inner cavity 4, or the outer side of the second connecting portion 14 is provided with a snap-point protrusion ring which is arranged in a circle and is used for being abutted against the inner wall of the conical inner cavity 4 when the second connecting portion 14 stretches into the conical inner cavity 4.
As shown in fig. 5, a plurality of clamping point protrusions 18 are arranged on the outer periphery of the second connecting portion 14 at intervals along the axial direction, or a plurality of clamping point protrusions 18 are arranged on the outer periphery of the second connecting portion 14 at intervals along the axial direction, when the cannula connector 1 and the infusion connector 3 are in threaded connection, the first connecting portion 13 is in threaded connection with the outer side of the connecting end 8 of the cannula connector 1, the top-in end 16 of the second connecting portion 14 stretches into the tapered inner cavity 4 to compress the elastic piece 2, so that the elastic piece 2 slides towards one side of the catheter along the axial direction, a gap is formed between the thick end of the elastic piece 2 and the end face of the tapered inner cavity 4, the clamping point protrusions 18 on the outer periphery of the second connecting portion 14 can be abutted with the inner wall of the tapered inner cavity 4 in the moving space under the moving action of the second connecting portion 14, and therefore the connection strength between the second connecting portion 14 and the tapered inner cavity 4 can be further improved, sliding of the second connecting portion 14 from the cannula connector 1 is further prevented through the arrangement of the clamping point protrusions 18, the elastic piece 2 is matched with the threaded connection 1 to realize further improvement of the elastic piece 2, and further locking of the locking device is locked and the elastic piece is further locked to the positioning connector 2.
As a preferred embodiment, at least part of the cannula joint 1, the elastic piece 2 and the infusion joint 3 is provided with transparent materials, the cannula joint 1 and the infusion joint 3 are made of hard materials, and the elastic piece 2 is made of soft elastic materials.
At least part of the cannula connector 1, the elastic piece 2 and the infusion connector 3 are provided with transparent materials, preferably, the connecting end 8 of the cannula connector 1, the matching end 11 of the infusion connector 3 and the elastic piece 2 are arranged to be transparent materials, so that medical staff can intuitively observe the cannula connector 1 and the connection process of the elastic piece 2 and the infusion connector 3 inside the cannula connector from outside, observe the moving position of the elastic piece 2 and the locking degree of a catheter conveniently, adjust the connection degree of the infusion connector 3 and the cannula connector 1 conveniently, observe the state of the catheter with different sizes under the compression action of different degrees of the elastic piece 2 in time, and avoid the phenomenon that the catheter is flattened.
As shown in fig. 2, the outer circumference of the infusion end 12 of the infusion connector 3 is provided with a bump 22 along the radial direction, the bump 22 protrudes from the outer wall along the radial direction, and the bump 22 is used for positioning the infusion apparatus, limiting the movement of the infusion apparatus along the axial direction of the taper hole 21, and preventing the infusion apparatus from excessively entering the inside of the taper hole 21 and not being easy to pull out. In addition, be located the cannula end 7 periphery of infusion joint 3 along circumference direction equidistant be provided with a plurality of second lugs 20, be convenient for medical personnel's hand promote infusion joint 3 and cannula joint 1 carry out threaded connection through the setting of second lug 20.
The application can be realized by adopting or referring to the prior art at the places which are not described in the application.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (10)
1. A tapered catheter adapter for connection to a catheter for anesthesia, comprising:
A cannula fitting having a tapered lumen extending partially in an axial direction;
The elastic piece is provided with a conical peripheral surface and sleeved in the conical inner cavity through the conical peripheral surface, and is provided with a mounting hole for inserting the catheter along the axial direction;
the infusion connector is detachably connected with the cannula connector and is used for being connected with an infusion apparatus;
When the cannula fitting and the infusion fitting are in an assembled connection state, the infusion fitting can be configured to impart an axial compressive force to the resilient member such that the resilient member slides on the tapered lumen toward the catheter side and expands toward the wall of the tapered lumen such that the resilient member increases in radial dimension and the mounting hole reduces in aperture to lock the catheter.
2. The connector of claim 1, wherein the elastic member has a bullet shape, the shape of the tapered cavity is adapted to the shape of the elastic member so that the elastic member is sleeved in the tapered cavity, the elastic member has a thin end facing the catheter in the axial direction and a thick end opposite to the thin end for being compressed by the connector, and the radial dimension from the thin end side to the thick end side of the elastic member is gradually increased.
3. A tapered catheter adapter as defined in claim 2, wherein a plurality of elastic barbs are formed on an inner wall surface of the mounting hole of the elastic member in the axial direction, and the elastic barbs are circumferentially spaced or non-spaced apart along the mounting hole, and the elastic barbs are inclined toward one side of the infusion adapter to restrict the catheter inserted into the mounting hole from slipping toward the tip to generate the disengaging movement.
4. A tapered catheter hub as in claim 1, wherein said cannula hub has a proximal end and a distal end, said proximal end defining a cannula end for connection to said catheter and said distal end defining a connection end for mating with said infusion hub;
The cannula end has a first port facing the catheter, the first port being configured to receive the catheter therethrough, the connecting end has a tapered lumen therein, the tapered lumen has a communication hole open toward the proximal end side, and the first port communicates with the tapered lumen through the communication hole.
5. The tapered catheter adapter of claim 4, wherein a projection of the first port along a radial direction of the cannula adapter is flared, the opening inner diameter dimension of the first port toward a proximal section of the proximal end of the cannula adapter to a distal section of the first port toward the distal end of the cannula adapter gradually decreasing;
the distal section opening of the first port corresponds to the mounting hole, and the distal section opening inner diameter of the first port is not smaller than the mounting hole inner diameter.
6. The tapered catheter adapter of claim 1, wherein the infusion adapter has a mating end for mating connection with the cannula adapter and an infusion end for mating connection with an infusion set, the mating end having a first connection portion removably connected to an outside of the cannula adapter and a second connection portion extending into the tapered lumen for abutting and compressing the resilient member.
7. The tapered catheter adapter of claim 6, wherein an annular cavity is formed by a gap between the first connecting portion and the second connecting portion in a radial direction, an inner wall of the first connecting portion in the annular cavity is provided with an inner thread, an outer thread is arranged on the periphery of the distal end of the cannula adapter, and when the cannula adapter and the infusion adapter are in an assembled and connected state, the outer thread of the cannula adapter and the inner thread of the infusion adapter are mutually screwed, and the second connecting portion can partially extend into the tapered inner cavity.
8. The tapered catheter adapter of claim 6, wherein the second connecting portion extends in the axial direction of the infusion adapter to form a tip end for compressing the elastic member, wherein a mating hole penetrating the tip end is formed in the second connecting portion in the axial direction, and the mating hole communicates with the mounting hole to form a conduction channel of the guide catheter.
9. The tapered catheter adapter of claim 6, wherein the second connector portion has a plurality of snap-point protrusions on an outer circumference in an axial direction for abutting against an inner wall of the tapered lumen when the second connector portion extends into the tapered lumen.
10. The tapered catheter adapter of claim 1, wherein at least a portion of the cannula adapter, the elastic member, and the infusion adapter are formed of a transparent material, wherein the cannula adapter and the infusion adapter are formed of a hard material, and wherein the elastic member is formed of a soft elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411614539.6A CN119280647A (en) | 2024-11-13 | 2024-11-13 | A conical conduit connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411614539.6A CN119280647A (en) | 2024-11-13 | 2024-11-13 | A conical conduit connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119280647A true CN119280647A (en) | 2025-01-10 |
Family
ID=94153246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411614539.6A Pending CN119280647A (en) | 2024-11-13 | 2024-11-13 | A conical conduit connector |
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| Country | Link |
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| CN (1) | CN119280647A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119925790A (en) * | 2025-02-24 | 2025-05-06 | 临沂市兴华医用器材有限公司 | Anti-deformation anesthesia catheter |
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| CN214318069U (en) * | 2020-07-28 | 2021-10-01 | 深圳市第二人民医院(深圳市转化医学研究院) | A kind of tendon suture and anastomosis device using the same |
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| GB2000976A (en) * | 1977-07-18 | 1979-01-24 | Kendall & Co | Adaptor assembly for connecting a syringe to a catheter |
| CN103453248A (en) * | 2013-08-28 | 2013-12-18 | 托肯恒山科技（广州）有限公司 | Anti-dropping hermetically-connecting structure of pipelines |
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