CN116807517A - Catheter connection device and ultrasonic retraction system - Google Patents
Catheter connection device and ultrasonic retraction system Download PDFInfo
- Publication number
- CN116807517A CN116807517A CN202310639022.1A CN202310639022A CN116807517A CN 116807517 A CN116807517 A CN 116807517A CN 202310639022 A CN202310639022 A CN 202310639022A CN 116807517 A CN116807517 A CN 116807517A
- Authority
- CN
- China
- Prior art keywords
- shell
- coaxial connector
- catheter
- connection device
- plug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000013016 damping Methods 0.000 claims description 13
- 238000012546 transfer Methods 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 2
- 230000004308 accommodation Effects 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 description 40
- 230000037431 insertion Effects 0.000 description 40
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 238000000605 extraction Methods 0.000 description 3
- 238000002608 intravascular ultrasound Methods 0.000 description 3
- 210000004204 blood vessel Anatomy 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 206010016654 Fibrosis Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000002308 calcification Effects 0.000 description 1
- 238000003759 clinical diagnosis Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 208000029078 coronary artery disease Diseases 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004761 fibrosis Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 231100000216 vascular lesion Toxicity 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
- A61B8/445—Details of catheter construction
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M2039/1033—Swivel nut connectors, e.g. threaded connectors, bayonet-connectors
-
- 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
-
- 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
- A61M2039/1066—Tube connectors; Tube couplings having protection means, e.g. sliding sleeve to protect connector itself, shrouds to protect a needle present in the connector, protective housing, isolating sheath
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Pathology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Radiology & Medical Imaging (AREA)
- Physics & Mathematics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Abstract
The invention belongs to the technical field of medical equipment and discloses a catheter connecting device and an ultrasonic withdrawing system, wherein the catheter connecting device comprises a containing shell and a coaxial connector socket part, and through holes are formed on opposite sides of a shell wall of the containing shell; the coaxial connector is characterized by further comprising a conduit plug-in shell and a coaxial connector plug part, wherein a slot corresponding to the through hole is formed in the shell wall of the conduit plug-in shell; the locking piece is connected to the accommodating shell in a switching way, and when the second end of the locking piece moves close to or far away from the accommodating shell, the first end of the locking piece is far away from or inserted into the slot; one end of the elastic piece is connected with the locking piece, and the other end of the elastic piece is connected with the accommodating shell so as to reset the locking piece. The ultrasonic withdrawing system adopts the catheter connecting device, can limit the catheter plug housing to move in the axial direction and the circumferential direction at the two-way side, and can ensure that the coaxial connector plug part and the coaxial connector socket part keep synchronous rotation, thereby improving the reliability of mechanical connection and signal transmission.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a catheter connecting device and an ultrasonic withdrawing system.
Background
Intravascular ultrasound (IVUS) is an emerging technique for clinical diagnosis and interventional therapy of coronary heart disease. The miniature ultrasonic transducer is sent into the cardiovascular cavity of the human body through the interventional catheter to emit ultrasonic waves and collect echoes, and the cross-sectional shape, the size, the blood flow information and the like of the blood vessel are displayed in real time after signal processing, so that the diagnosis and the treatment of vascular lesions such as calcification, fibrosis, lipid pools and the like are assisted.
The intravascular ultrasound catheter is used as disposable consumable, and generally needs to be rotated at a specific frequency and linearly moved at a certain speed by an external reusable catheter connecting device so as to drive a transducer assembly to acquire image information of a target blood vessel segment, and the intravascular ultrasound catheter is easy to assemble and disassemble, high in motion precision, stable in information transmission, long in service life and the like in the use process.
Disclosure of Invention
The invention aims to provide a catheter connecting device and an ultrasonic withdrawing system, which improve the reliability of connection, avoid unstable transmission signals caused by connection shaking and improve the use experience of users.
To achieve the purpose, the invention adopts the following technical scheme:
a catheter connection device comprising:
the coaxial connector comprises a containing shell, a connecting rod and a connecting rod, wherein one end of the containing shell is opened, a coaxial connector socket part is rotatably arranged in the containing shell, and through holes are formed in the opposite sides of the containing shell;
the pipe inserting shell is provided with an opening at one end, a coaxial connector plug part is rotationally arranged in the pipe inserting shell, the pipe inserting shell can be inserted into the accommodating shell so as to enable the coaxial connector plug part to be connected with the coaxial connector socket part, and a slot corresponding to the through hole is arranged on the shell wall of the pipe inserting shell;
the two locking pieces are arranged on two sides of the accommodating shell, the locking pieces are connected to the accommodating shell in a switching mode, the first ends of the locking pieces penetrate through the accommodating shell Kong Shenru, and when the second ends of the locking pieces do movement close to or far away from the accommodating shell, the first ends of the locking pieces are far away from or are inserted into the slots;
and one end of the elastic piece is connected with the second end of the locking piece, and the other end of the elastic piece is connected with the accommodating shell so as to reset the locking piece.
Preferably, the locking piece comprises a pressing section, a connecting section and an inserting section which are sequentially connected, the pressing section and the inserting section are oppositely arranged, the connecting section is provided with a switching hole, a rotating shaft is inserted in the switching hole, the rotating shaft is connected to the shell wall of the accommodating shell, and the inserting section penetrates through the penetrating hole to be far away from or inserted into the slot.
Preferably, the elastic member is disposed between the pressing section and the receiving case.
Preferably, the end of the insertion section facing the insertion slot has a guide bevel, which faces the opening of the receiving shell.
Preferably, the conduit insertion shell is further provided with a rotation stopping clamping tenon, and the accommodating shell is provided with a clamping tenon groove matched with the rotation stopping clamping tenon.
Preferably, the coaxial connector socket part includes a rotary sleeve having one end opened, and a coaxial connector socket provided in the rotary sleeve; the coaxial connector plug part comprises a rotating body and a coaxial connector plug arranged on the rotating body, and the coaxial connector plug is matched and spliced with the coaxial connector socket; the rotary sleeve is provided with a limiting groove extending from the opening end of the rotary sleeve to the other end, and the outer wall of the rotary body is provided with a limiting boss matched and spliced with the limiting groove.
Preferably, the end face of the opening end of the rotary sleeve is provided with an inclined spiral face, the inclined spiral face is obliquely arranged from outside to inside towards the inner bottom of the rotary sleeve, the end part, close to the rotary sleeve belt, of the limiting boss is provided with a spherical guide face, and the spherical guide face is in sliding fit with the rotary sleeve.
Preferably, two limiting grooves are arranged in number, and the two limiting grooves are oppositely arranged; the number of the limiting bosses is also two, the two limiting bosses are oppositely arranged, the number of the inclined spiral surfaces is four, the middle plane of the two limiting grooves is used as a symmetrical plane, two inclined spiral surfaces are respectively arranged on two sides of the symmetrical plane, the rotation directions of the two inclined spiral surfaces on each side are opposite, the two inclined spiral surfaces on each side are connected to form outwards protruding tips, and the four inclined spiral surfaces are symmetrically arranged relative to the longitudinal axis of the rotary sleeve.
Preferably, a vibration-damping ring is arranged on the outer side of the shell wall of the conduit plug-in shell, the conduit plug-in shell is respectively arranged coaxially with the conduit plug-in shell and the accommodating shell, and when the conduit plug-in shell is completely plugged in the accommodating shell, the accommodating shell is in interference fit with the vibration-damping ring.
There is also provided an ultrasound retraction system comprising a catheter connection device as described above.
The invention has the beneficial effects that:
through the locking piece which is connected to the accommodating shell in a switching way, when the second end of the locking piece is inserted into the slot of the conduit plug-in shell, the conduit plug-in shell can be limited to move in the axial direction and the circumferential direction at the two-way side, and the instability of signal transmission at the coaxial connector inside caused by shaking of the locking piece and the conduit plug-in shell is avoided; the reliability of connection is further improved; meanwhile, the locking piece can be inserted into or pulled out of the slot in a manual pressing mode, so that the operation is convenient, and meanwhile, the elastic piece can provide stable supporting force on one hand, and the locking piece is limited to slide out of the slot to ensure stable connection; on the other hand, when the locking piece is separated from the slot, the locking piece can be quickly reset, so that the locking piece is more convenient to plug in; the use experience of the user is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of a catheter connection device of the present invention;
FIG. 2 is a cross-sectional view of the catheter connection device of the present invention;
FIG. 3 is a schematic view of a locking element inserted into a conduit insertion housing of a conduit connection device of the present invention;
FIG. 4 is a schematic view of a locking element in a catheter adapter of the present invention;
FIG. 5 is a schematic view of a coaxial connector plug portion and a coaxial connector plug of the catheter connector device of the present invention;
FIG. 6 is a schematic view showing the cooperation of the limiting boss and the helical surface in a first state in the conduit connection device of the present invention;
FIG. 7 is a schematic view showing the cooperation of the limiting boss and the helical surface in the second state in the conduit connecting device of the present invention;
FIG. 8 is a schematic view of a beveled spiral surface showing the diameter of the small end and the diameter of the large end of the catheter connection device of the present invention;
fig. 9 is a schematic view showing the maximum guiding idle stroke LS between the coaxial connector plug and the coaxial connector socket in the conduit connection device of the present invention.
In the figure:
1. a housing case; 11. a clamping tenon groove; 2. a coaxial connector socket portion; 21. rotating the sleeve; 211. a limit groove; 212. a helical surface; 22. a coaxial connector receptacle; 3. a conduit plug housing; 31. a slot; 32. a rotation stopping trip; 4. a coaxial connector plug portion; 41. a limit boss; 42. a spherical guide surface; 43. a rotating body; 44. a coaxial connector plug; 45. a conical inclined surface; 5. a locking member; 51. a pressing section; 52. a connection section; 53. a plug section; 54. a transfer hole; 55. a guide slope; 6. an elastic member; 7. a vibration damping ring; 8. a first adapter bearing; 9. and a second adapter bearing.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1 to 9, the present embodiment provides a conduit connection device including a housing case 1, one end of the housing case 1 is opened, a coaxial connector socket part 2 is rotatably provided in the housing case 1, and through holes are provided on opposite sides on a case wall of the housing case 1; the connector is characterized by further comprising a conduit insertion shell 3, one end of the conduit insertion shell 3 is opened, a coaxial connector plug part 4 is rotationally arranged in the conduit insertion shell 3, the conduit insertion shell 3 can be inserted into the accommodating shell 1 so that the coaxial connector plug part 4 is connected with the coaxial connector plug part 2, and a slot 31 corresponding to the through hole is arranged on the shell wall of the conduit insertion shell 3; the locking device is also provided with a locking piece 5 and an elastic piece 6, wherein the two locking pieces 5 are arranged on two sides of the accommodating shell 1, the locking piece 5 is connected to the accommodating shell 1 in a switching way, the first end of the locking piece 5 penetrates through the through hole to penetrate into the accommodating shell 1, and when the second end of the locking piece 5 moves close to or far from the accommodating shell 1, the first end of the locking piece 5 is far away from or is inserted into the slot 31; one end of the elastic member 6 is connected with the second end of the locking member 5, and the other end of the elastic member 6 is connected with the accommodating case 1 to enable the locking member 5 to be reset.
Through the locking piece 5 which is connected to the accommodating shell 1 in a switching way, when the second end of the locking piece 5 is inserted into the slot 31 of the conduit plug-in shell 3, the conduit plug-in shell 3 can be limited to move in the axial direction and the circumferential direction at the two-way side, and the instability of a transmission signal caused by shaking of the locking piece 5 is avoided; the reliability of connection is further improved; meanwhile, the locking piece 5 can be inserted into or pulled out of the slot 31 in a manual pressing mode, so that the operation is convenient, and meanwhile, the elastic piece 6 can provide stable supporting force on one hand, and the locking piece 5 is limited to slide out of the slot 31 so as to ensure stable connection; on the other hand, when the locking piece 5 is separated from the slot 31, the locking piece 5 can be reset rapidly, so that the locking piece 5 is more convenient to plug in.
Referring to fig. 1-4, the present embodiment provides a catheter connecting device, which includes a housing shell 1 with an opening at one end and a catheter insertion shell 3 with an opening at one end, in this embodiment, the inner diameter of the housing shell 1 is larger than the outer diameter of the catheter insertion shell 3, the catheter insertion shell 3 can be inserted into the housing shell 1, through holes are disposed on opposite sides of a shell wall of the housing shell 1, and in this embodiment, the through holes are symmetrically disposed with respect to a central axis of the housing shell 1; the shell wall of the conduit plug-in shell 3 is provided with a slot 31 corresponding to the through hole; the catheter connecting device is also provided with locking pieces 5, the two locking pieces 5 are arranged on two sides of the accommodating shell 1, the locking pieces 5 are switched to the shell wall of the accommodating shell 1, the first ends of the locking pieces 5 penetrate through the through holes and deeply penetrate into the accommodating shell 1, and when the second ends of the locking pieces 5 do movement close to or far from the accommodating shell 1, the first ends of the locking pieces 5 are far away from or inserted into the slots 31. Specifically, as shown in fig. 4, the locking member 5 includes a pressing section 51, a connecting section 52, and a plugging section 53, which are sequentially connected; in this embodiment, the first end of the locking member 5 is a plugging section 53, and the second end of the locking member 5 is a pressing section 51. The pressing section 51 and the inserting section 53 are arranged oppositely, namely the pressing section 51, the connecting section 52 and the inserting section 53 are connected into a U shape; the connecting section 52 is provided with a through hole 54, the through hole 54 is inserted with a rotating shaft, the rotating shaft is connected to the wall of the accommodating shell 1 so that the locking piece 5 is rotatably connected to the wall of the accommodating shell 1, and the inserting section 53 passes through the through hole so as to be far away from or inserted into the slot 31. With the above structure, when the pressing section 51 is forced, the pressing section 51 is close to the accommodating case 1, and the locking member 5 rotates around the rotation shaft, so as to drive the inserting section 53 to be far away from the slot 31; when the pressing section 51 is far away from the wall of the accommodating case 1 by applying force, the locking piece 5 rotates around the rotating shaft, so that the inserting section 53 is driven to be close to the inserting groove 31, and the inserting section 53 can be inserted into the inserting groove 31. The locking piece 5 is arranged on the opposite side of the containing shell 1 to limit the circumference and the circumference of the conduit inserting shell 3, so that the connection between the containing shell 1 and the conduit inserting shell 3 is more stable.
As shown in fig. 1 and 3, the catheter connection device further has an elastic member 6, one end of the elastic member 6 is connected to the second end of the locking member 5, and the other end of the elastic member 6 is connected to the wall of the housing case 1 to enable the locking member 5 to be restored. In this embodiment, the elastic member 6 is a compression spring, and in other embodiments, an elastic restoring rubber pad may be used. Specifically, the elastic member 6 is disposed between the pressing section 51 on the locking member 5 and the housing 1, and when the pressing section 51 presses the elastic member 6, the inserting section 53 of the locking member 5 is away from the slot 31, and during this time, the elastic member 6 provides a restoring force to urge the locking member 5 to return. By adopting the structure, on one hand, restoring force can be provided, and the locking piece 5 is convenient to return; on the other hand, the plug section 53 is kept in a trend that the plug section 53 is inserted into the slot 31, so that the plug is more compact and firm. Further, for facilitating the insertion, an end of the insertion section 53 facing the slot 31 has a guiding inclined surface 55, the guiding inclined surface 55 faces the opening of the housing case 1, and when the conduit insertion case 3 is inserted into the housing case 1, an end of the conduit insertion case 3 abuts against the guiding inclined surface 55 and pushes the insertion section 53 to move in a direction away from the conduit insertion case 3. Thus, with the above structure, when the pipe insertion housing 3 is inserted into the housing case 1, the pipe insertion housing 3 abuts against the guide inclined surface 55 to smoothly continue the forward movement of the pipe insertion housing 3, and the insertion section 53 moves in a direction away from the insertion slot 31, at this time, the locking member 5 rotates through the rotation shaft, and the pressing section 51 presses the elastic member 6; when the plug-in section 53 moves to the position of the slot 31, the plug-in section 53 is inserted into the slot 31, and the elastic member 6 provides a restoring force to keep the plug-in section 53 in a state of being inserted into the slot 31; when the catheter plug housing 3 is withdrawn from the accommodating housing 1, the pressing section 51 is forced to approach the accommodating housing 1, and the locking piece 5 rotates through the rotating shaft, so that the plug section 53 is withdrawn from the slot 31, the catheter plug housing 3 can be pulled out, and the locking piece 5 can be restored to the original position by releasing the pressing section 51. Further, in a natural state without the action of external force, the distance between the two plugging sections 53 is smaller than the outer diameter of the accommodating case 1, so that plugging is more compact. In addition, in order to facilitate one-hand operation, the convenience of operation is improved, the two locking members 5 are symmetrically disposed, and the two elastic members 6 and the two pressing sections 51 are disposed at the same side of the housing case 1. Still further, in order to facilitate smooth insertion of the conduit insertion casing 3 and the accommodating casing 1, the conduit insertion casing 3 is further provided with a rotation stopping latch 32, the rotation stopping latch 32 and the conduit insertion casing 3 are coaxially arranged, the accommodating casing 1 is provided with a latch groove 11 matched with the rotation stopping latch 32, the rotation stopping latch 32 is arranged on the outer wall of the conduit insertion casing 3, the latch groove 11 is arranged on the outer wall of the accommodating casing 1, and when the rotation stopping latch 32 is inserted into the latch groove 11, the first end of the locking piece 5 can be inserted into the slot 31. Therefore, when in plugging, only the rotation stopping clamping tenons 32 and the clamping tenons 11 are aligned, preliminary positioning is realized, so that plugging is convenient, and in addition, the mutual rotation of the conduit plugging shell 3 and the accommodating shell 1 can be further limited.
Further, as shown in fig. 2, a vibration-damping ring 7 is disposed on the outer wall of the conduit plugging shell 3, the vibration-damping ring 7 is coaxially disposed with the conduit plugging shell 3 and the accommodating shell 1, when the conduit plugging shell 3 is completely plugged into the accommodating shell 1, the accommodating shell 1 and the vibration-damping ring 7 are in interference fit, and by adopting the above structure, on one hand, the conduit plugging shell 3 is plugged more tightly, and on the other hand, vibration-damping effect can be provided by absorbing vibration energy through the vibration-damping ring 7. In order to facilitate the insertion, further, the vibration-damping ring 7 is a conical ring, the conical ring is sleeved on the outer wall of the conduit insertion shell 3, and the smaller end of the conical ring faces the accommodating shell 1. The damping ring 7 is made of a relatively low-hardness silicone rubber in this embodiment, but may be made of a relatively low-hardness rubber in other embodiments.
As shown in fig. 2 and 5, the catheter plug housing 3 of the catheter connection device is rotatably provided with a coaxial connector plug portion 4, one end of the coaxial connector plug portion 4 is used for connecting a catheter, the other end of the coaxial connector plug portion 4 is used for connecting a coaxial connector socket portion 2, specifically, a second adapter bearing 9 is arranged in the catheter plug housing 3, and the coaxial connector plug portion 4 is in adapter connection with the second adapter bearing 9; and the second adapter bearing 9 is rotatably arranged in the catheter hub 3. The coaxial connector socket part 2 includes a rotary sleeve 21 having one end opened, and a coaxial connector socket 22 provided in the rotary sleeve 21; the coaxial connector plug portion 4 includes a rotating body 43 and a coaxial connector plug 44 provided on the rotating body 43, and the coaxial connector plug 44 and the coaxial connector receptacle 22 can be mated and plugged; in this embodiment, the coaxial connector plug 44 and the coaxial connector receptacle 22 form a coaxial connector for information transmission. For facilitating the rotation, a first rotating bearing 8 is provided in the housing 1, and a rotating sleeve 21 is connected to the first rotating bearing 8 for rotation. In order to coaxially rotate, a limiting groove 211 extending from the opening end of the rotating sleeve 21 to the other end is formed in the rotating sleeve 21, and a limiting boss 41 matched with the limiting groove 211 is formed in the outer wall of the rotating body 43, so that when the accommodating shell 1 and the catheter plug-in shell 3 are plugged, the limiting boss 41 on the rotating body 43 can be plugged into the limiting groove 211 on the rotating sleeve 21, and rotating torque is transmitted to coaxially rotate through the contact surface between the limiting groove 211 and the limiting boss 41. Preferably, the spacing boss 41 and the spacing groove 211 are in a tiny clearance fit along the width direction of the spacing groove 211 so as to reduce the inertia impact during the rotation start and stop, and the spacing boss 41 and the spacing groove 211 are in a larger interference fit along the butt joint radial direction, but the spacing boss 41 must not exceed the outer surface of the spacing groove 211 so as to ensure enough structural strength to perform rotation driving or rotation braking without generating motion interference.
Further, in order to make the limit boss 41 quickly enter the limit groove 211, the end face of the opening end of the rotary sleeve 21 is provided with an inclined spiral surface 212, the inclined spiral surface 212 is inclined from outside to inside toward the inner bottom of the rotary sleeve 21, the end of the limit boss 41 close to the belt of the rotary sleeve 21 is provided with a spherical guide surface 42, the spherical guide surface 42 is in transitional connection with the outer surface of the limit boss 41 through an arc surface, the spherical guide surface 42 is in sliding fit with the inclined spiral surface 212, and therefore, in the inserting process, no matter what the relative positions of the spherical guide surface 42 and the inclined spiral surface 212 are, the limit boss 41 can finally fall into the limit groove 211 completely. When the rotating body 43 is inserted into the rotating sleeve 21 just before the insertion, and when the limiting boss 41 and the limiting groove 211 are not aligned completely, the spherical guide surface 42 at the end of the limiting boss 41 can fall on the inclined spiral surface 212 completely, and along with the further pushing of the rotating body 43, the friction moment generated on the inclined spiral surface 212 can enable the side with smaller rotation resistance moment to rotate and avoid, because the friction force of the bearing is extremely small, the rotating sleeve 21 rotates normally until the limiting boss 41 is aligned with the center of the limiting groove 211 exactly. At this time, the rotating body 43 and the rotating sleeve 21 do not rotate relatively, but only move in the axial direction, and the limiting boss 41 can be inserted into the limiting groove 211 by continuing to push the rotating body 43.
Through the above-mentioned setting, can make rotatory sleeve 21 automatic rotation with correct the position to make spacing boss 41 insert in spacing groove 211, and need not to make spacing groove 211 and spacing boss 41 carry out the manual alignment before the grafting, conveniently carry out quick blind the inserting from optional position, improved the convenience of grafting. And through setting up the terminal surface of spacing boss 41 as spherical guide face 42, set up the terminal surface of rotating sleeve 21 as helical surface 212 simultaneously for there is just stable point contact between spacing boss 41 and the helical surface 212, be favorable to reducing sliding friction, make the screw in more smooth and easy and keep better structural strength. Compared with the combination of the positive spiral surface and the rectangular prism in the prior art, the operation force during the insertion and the extraction can be obviously reduced, the insertion and the extraction are more stable, the use efficiency and the user experience are improved, the damage caused by scratch to the end surface of the rotating sleeve 21 can be avoided, and the abrasion is reduced.
More specifically, two limiting grooves 211 are arranged, and the two limiting grooves 211 are oppositely arranged; correspondingly, the number of the limiting bosses 41 is also two, the two limiting bosses 41 are oppositely arranged, and each limiting boss 41 can be in plug-in fit with the corresponding limiting groove 211. By adopting the arrangement, the coaxial rotation of the rotating body 43 and the rotating sleeve 21 after the rotating body and the rotating sleeve are assembled in a plugging way is more stable and reliable, and the torque transmission is more stable and uniform. Of course, in other embodiments, the limiting boss 41 and the limiting groove 211 may be provided in three or more uniformly distributed manners, and may be flexibly provided according to actual requirements, which is not limited herein.
Correspondingly, the number of the inclined spiral surfaces 212 is four, the middle plane of the two limiting grooves 211 is used as a symmetrical plane, two inclined spiral surfaces 212 are respectively arranged on two sides of the symmetrical plane, the rotation directions of the two inclined spiral surfaces 212 on each side are opposite, the two inclined spiral surfaces 212 on each side are connected to form an outwards protruding tip, and the four inclined spiral surfaces 212 are symmetrically arranged in pairs relative to the longitudinal axis of the rotary sleeve 21. The middle plane of the two limiting grooves 211 is a plane formed by the middle connecting line of the two limiting grooves 211 along the axial direction. Before the insertion, since the radial relative position between the rotary body 43 and the rotary sleeve 21 is random, the spherical guide surface 42 of the limit boss 41 can fall on any one of the inclined spiral surfaces 212. Through setting up the quantity of helical surface 212 to four for rotatory sleeve 21 just can insert spacing boss 41 in spacing groove 211 at most 90 degrees, it is simpler and more simple to handle, and required promotion stroke is shorter, has improved grafting efficiency, and for the setting of two helical surfaces 212, can save axial space, makes rotatory sleeve 21 can make littleer. Of course, in other embodiments, two inclined spiral surfaces 212 may be provided, and two inclined spiral surfaces 212 may be provided on two sides of the connecting line of the two limiting grooves 211, which is flexibly set according to the requirement, and the present invention is not limited thereto.
As shown in fig. 8, in this embodiment, the inclined spiral surface 212 is an inclined spiral surface formed along the axial direction of the rotary sleeve 21, that is, the central axis of the rotary sleeve 21 is used as a guide axis, the cylindrical spiral line on the inner cavity of the rotary sleeve 21 is used as a guide line, and the angle α between two opposite element lines of the inclined spiral surface 212 is 60 ° to 120 °, preferably 90 °, as seen in the axial section of the rotary sleeve 21, and the guide angle of the inclined spiral surface 212 is half the angle α, that is, 30 ° to 60 °, preferably 45 °. By setting the guide angle of the inclined spiral surface 212 within the above range, the operation force at the time of insertion can be reduced to more effort-saving complete insertion of the rotating body 43 into the rotating sleeve 21. Specifically, the guiding angle of the inclined spiral surface 212 may be 30 °, 45 °, 50 ° or 60 °, and may be flexibly set according to the requirement.
As shown in fig. 8, the diameter D1 of the small end of the helical surface 212 is equal to the diameter of the inner cavity of the rotary sleeve 21, and the diameter D2 of the large end of the helical surface 212 is not smaller than the maximum enveloping circle diameter of the limit boss 41, so that the spherical guide surface 42 can completely fall on the helical surface 212 and can be more smoothly in sliding fit with the helical surface 212, and finally the limit boss 41 can be smoothly inserted into the limit groove 211, thereby preventing the jamming phenomenon.
When the number of the inclined spiral surfaces 212 in the circumferential direction is four, the quarter lead of the inclined spiral surfaces 212 is not less than the maximum guide idle stroke LS between the coaxial connector plug 44 and the coaxial connector socket 22. Wherein, the contact state of the spherical guide surface 42 of the limit boss 41 and the tip formed by the helical surface 212 is defined as a first state, i.e. a state shown in fig. 6, the alignment state of the limit boss 41 and the limit groove 221 is defined as a second state, i.e. a state shown in fig. 7, and when the limit boss 41 is switched from the first state to the second state, i.e. the rotary sleeve 21 is rotated by 90 °, the axial distance taken by the limit boss 41 is one quarter of the lead of the helical surface 212, i.e. Hp/4 shown in fig. 8. The maximum guide idle stroke LS is determined by: the spherical guide surface 42 of the limit boss 41 is brought into contact with the tip end formed by the two inclined spiral surfaces 212, and the distance between the end surface of the coaxial connector plug 44 and the end surface of the coaxial connector socket 22 is the maximum guide idle stroke LS, as shown in fig. 9.
During the process of inserting the rotating body 43 into the rotating sleeve 21, the rotating sleeve 21 needs to rotate, and if the coaxial connector plug 44 and the coaxial connector socket 22 are in insertion fit during this insertion process, the rotating sleeve 21 may not easily rotate due to the increase of friction resistance, and the insertion difficulty is increased. By adopting the above arrangement, even if the spherical guide surface 42 falls at the worst position on the inclined spiral surface 212, that is, the rotation of the rotating sleeve 21 is required to be performed by the maximum stroke, it is ensured that the coaxial connector plug 44 and the coaxial connector socket 22 are not touched all the time in the above rotation process, thereby ensuring that the rotating sleeve 21 rotates more smoothly and further ensuring smooth insertion and extraction. Further, the side wall of the end of the rotating body 43 is provided as a tapered slope 45. The conical inclined surface 45 can ensure that the rotating body 43 and the inclined spiral surface 212 are contacted by the spherical guide surface 42 only, so that the end parts are prevented from forming multi-point contact in the plugging process to influence each other, the operation is more convenient, and the plugging difficulty is reduced.
The present embodiment also provides an ultrasonic retracting system, which adopts the above-mentioned catheter connecting device, wherein the coaxial connector plug portion 4 on the catheter connecting device is connected with a catheter, the coaxial connector socket 22 is connected with an external signal receiving device, and the rotating sleeve 21 is connected with an external driving device. Thereby improve reliability and the convenience of pipe and drive equipment connection and communication through foretell pipe connecting device to pipe connecting device uses more conveniently when pegging graft, has promoted user's use experience.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. A catheter connection device, comprising:
the coaxial connector comprises a containing shell (1), wherein one end of the containing shell (1) is open, a coaxial connector socket part (2) is rotatably arranged in the containing shell (1), and through holes are formed in the opposite sides of the containing shell (1);
the pipe inserting shell (3), one end of the pipe inserting shell (3) is opened, the pipe inserting shell (3) is rotatably provided with a coaxial connector plug part (4), the pipe inserting shell (3) can be inserted into the accommodating shell (1) so that the coaxial connector plug part (4) is connected with the coaxial connector socket part (2), and a slot (31) corresponding to the through hole is formed in the shell wall of the pipe inserting shell (3);
the two locking pieces (5) are arranged on two sides of the accommodating shell (1), the locking pieces (5) are connected to the accommodating shell (1) in a switching mode, the first ends of the locking pieces (5) penetrate through the through Kong Shenru and are arranged in the accommodating shell (1), and when the second ends of the locking pieces (5) move close to or far away from the accommodating shell (1), the first ends of the locking pieces (5) are far away from or are inserted into the slots (31);
the elastic piece (6), the second end of locking piece (5) is connected to one end of elastic piece (6), the other end of elastic piece (6) is connected accommodation shell (1).
2. Catheter connection device according to claim 1, characterized in that the locking element (5) comprises a pressing section (51), a connecting section (52) and a plugging section (53) which are connected in sequence, the pressing section (51) and the plugging section (53) are arranged opposite, the connecting section (52) is provided with a transfer hole (54), the transfer hole (54) is plugged with a rotating shaft, the rotating shaft is connected to the shell wall of the housing shell (1), and the plugging section (53) passes through the through hole to be capable of being away from or being plugged into the slot (31).
3. Catheter connection device according to claim 2, characterized in that the elastic element (6) is arranged between the pressing section (51) and the receiving shell (1).
4. Catheter connection device according to claim 2, characterized in that the end of the plug section (53) facing the socket (31) has a guiding bevel (55), which guiding bevel (55) faces the opening of the receiving shell (1).
5. Catheter connection device according to claim 1, characterized in that the catheter plug housing (3) is further provided with a rotation-stopping latch (32), and the receiving housing (1) is provided with a latch groove (11) cooperating with the rotation-stopping latch (32).
6. Catheter connection device according to claim 1, characterized in that the coaxial connector socket part (2) comprises a rotating sleeve (21) with one end open and a coaxial connector socket (22) arranged inside the rotating sleeve (21); the coaxial connector plug part (4) comprises a rotating body (43) and a coaxial connector plug (44) arranged on the rotating body (43), wherein the coaxial connector plug (44) and the coaxial connector socket (22) can be matched and plugged; the rotary sleeve (21) is provided with a limit groove (211) extending from the opening end of the rotary sleeve (21) to the other end, and the outer wall of the rotary body (43) is provided with a limit boss (41) matched and spliced with the limit groove (211).
7. Catheter connection device according to claim 6, characterized in that the end face of the open end of the swivel sleeve (21) is provided with a helical surface (212), the helical surface (212) being arranged obliquely from outside to inside towards the inner bottom of the swivel sleeve (21), the limit boss (41) being provided with a spherical guide surface (42) near the end of the swivel sleeve (21) band, the spherical guide surface (42) being in sliding engagement with the swivel sleeve (21).
8. The catheter connection device according to claim 7, wherein the number of limit grooves (211) is two, and two limit grooves (211) are arranged opposite to each other; the number of the limiting bosses (41) is also two, the two limiting bosses (41) are oppositely arranged, the number of the inclined spiral surfaces (212) is four, the middle plane of the two limiting grooves (211) is used as a symmetrical surface, two inclined spiral surfaces (212) are respectively arranged on two sides of the symmetrical surface, the rotation directions of the two inclined spiral surfaces (212) on each side are opposite, the two inclined spiral surfaces (212) on each side are connected to form outwards protruding tips, and the four inclined spiral surfaces (212) are symmetrically arranged relative to the longitudinal axis of the rotary sleeve (21).
9. Catheter connection device according to any of claims 1-8, characterized in that a damping ring (7) is arranged outside the housing wall of the catheter hub housing (3), said damping ring (7) being arranged coaxially with the catheter hub housing (3) and the receiving housing (1), respectively, said receiving housing (1) being in interference fit with said damping ring (7) when the catheter hub housing (3) is completely plugged into the receiving housing (1).
10. Ultrasound retraction system, comprising a catheter connection device according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310639022.1A CN116807517A (en) | 2023-06-01 | 2023-06-01 | Catheter connection device and ultrasonic retraction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310639022.1A CN116807517A (en) | 2023-06-01 | 2023-06-01 | Catheter connection device and ultrasonic retraction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116807517A true CN116807517A (en) | 2023-09-29 |
Family
ID=88126705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310639022.1A Pending CN116807517A (en) | 2023-06-01 | 2023-06-01 | Catheter connection device and ultrasonic retraction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116807517A (en) |
-
2023
- 2023-06-01 CN CN202310639022.1A patent/CN116807517A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5300022B2 (en) | Self-aligning IVUS catheter rotating core connector | |
| JP4238730B2 (en) | A medical assembly comprising a catheter, a needle, and a sheath thereof | |
| CN116328172B (en) | Coaxial catheter interface device | |
| CN115363648B (en) | Flexible surgical instrument, flexible instrument and instrument conveying unit thereof | |
| WO2017007853A1 (en) | Self-alignment mechanism for imaging catheter and drive assembly | |
| CN108718014B (en) | A kind of quick plug-in photoelectric coupling connector for the intravascular imaging system of photoacoustic ultrasound | |
| CN220141690U (en) | Catheter connection device and ultrasonic retraction system | |
| US11317892B2 (en) | Over-the-wire ultrasound system with torque-cable driven rotary transducer | |
| CN116807517A (en) | Catheter connection device and ultrasonic retraction system | |
| CN116594124B (en) | Optical transceiver and optical transceiver plug mechanism | |
| CN217447836U (en) | Rotor and driver insertion structure and intravascular ultrasound catheter | |
| CN116350929B (en) | Catheter interface device | |
| CN111514445A (en) | Vascular treatment device | |
| CN211484658U (en) | Ultrasonic diagnosis equipment and IVUS probe thereof | |
| CN215994400U (en) | Support imbedding device | |
| CN112402056A (en) | Valve compression device and valve loading system | |
| CN215688807U (en) | Switching wheel set and support imbedding device | |
| CN219712229U (en) | Transmission structure and vascular intervention operation robot | |
| CN111419475A (en) | Assembling method of detachable connecting assembly and connecting assembly | |
| CN212853728U (en) | Detachable coupling assembling | |
| CN219699988U (en) | Front-back butt joint type biopsy device | |
| CN221120699U (en) | Power connection structure for vascular intervention surgical robot and surgical robot | |
| CN113712715A (en) | Support imbedding device | |
| CN219022981U (en) | Catheter connection structure and in-vivo imaging system | |
| CN221083668U (en) | Interventional ultrasound device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |