CN116407734B - Medical vascular sheath with positioning function - Google Patents
Medical vascular sheath with positioning function Download PDFInfo
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- CN116407734B CN116407734B CN202310680290.8A CN202310680290A CN116407734B CN 116407734 B CN116407734 B CN 116407734B CN 202310680290 A CN202310680290 A CN 202310680290A CN 116407734 B CN116407734 B CN 116407734B
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- sheath
- vascular sheath
- fixedly connected
- tube
- vascular
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- 230000002792 vascular Effects 0.000 title claims abstract description 60
- 238000001125 extrusion Methods 0.000 claims description 17
- 210000004204 blood vessel Anatomy 0.000 abstract description 18
- 230000008878 coupling Effects 0.000 abstract description 14
- 238000010168 coupling process Methods 0.000 abstract description 14
- 238000005859 coupling reaction Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 12
- 125000006850 spacer group Chemical group 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000008280 blood Substances 0.000 description 7
- 210000004369 blood Anatomy 0.000 description 7
- 230000006378 damage Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000002439 hemostatic effect Effects 0.000 description 5
- 230000000747 cardiac effect Effects 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 230000000916 dilatatory effect Effects 0.000 description 2
- 238000013152 interventional procedure Methods 0.000 description 2
- 206010053649 Vascular rupture Diseases 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 210000001105 femoral artery Anatomy 0.000 description 1
- 208000020016 psychiatric disease Diseases 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
- A61M25/09041—Mechanisms for insertion of guide wires
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a medical vascular sheath with a positioning function, and relates to the technical field of medical appliances. Including the backup pad, the backup pad rigid coupling has first fixed plate, first fixed plate sliding connection has first fly leaf, the backup pad rigid coupling has the second fixed plate, second fixed plate sliding connection has the second fly leaf, first fly leaf rotates to be connected with the support frame, first fly leaf and second fly leaf all are provided with the first spacing hole of equidistance distribution, first fixed plate and the equal sliding connection of second fixed plate have the spacer pin, support frame sliding connection has the connecting plate, the connecting plate rigid coupling has the vascular sheath, the vascular sheath rigid coupling has the sheath pipe, vascular sheath sliding connection has the expansion pipe. According to the invention, the positions of the first movable plate and the second movable plate are regulated, so that the support frame and the guide wire are in the same extension direction, and the phenomenon that the puncture opening of a patient is torn due to the fact that a medical staff deflects in the process of inserting the sheath tube and the expansion tube into the blood vessel of the patient is prevented.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a medical vascular sheath with a positioning function.
Background
Cardiac intervention is a very important treatment that can help patients treat or alleviate symptoms of a variety of psychological disorders. Vascular sheaths are commonly used therapeutic devices for cardiac interventional procedures, and are typically inserted into veins or arteries for connection to the patient's blood vessels and heart, and for general cardiac interventional procedures, vascular sheaths are typically inserted from the inside of the arm, through the elbow, and into the femoral artery and into the heart vessels in the body.
When carrying out cardiac intervention operation, medical personnel need insert patient's blood vessel with sheath pipe and expansion pipe along the seal wire, at medical personnel with the in-process of sheath pipe and expansion pipe inserting patient's blood vessel, if medical personnel's direction of inserting the expansion pipe takes place the skew, will lead to patient's puncture mouth to tear, causes the injury to the patient to when carrying out interventional therapy, hemostatic valve damage can lead to patient's blood to flow from the vascular sheath, leads to patient's blood loss, causes the difficulty for the operation.
Disclosure of Invention
In order to overcome the disadvantages mentioned in the background art, the present invention provides a medical vascular sheath with a positioning function.
The technical scheme of the invention is as follows: the utility model provides a medical vascular sheath with locate function, including the backup pad, the backup pad rigid coupling has first fixed plate, first fixed plate sliding connection has first fly leaf, the backup pad rigid coupling has the second fixed plate, second fixed plate sliding connection has the second fly leaf, first fly leaf rotates to be connected with the support frame, the support frame is provided with the sliding tray, the support frame is through the sliding tray on it and the spacing sliding fit of second fly leaf, first fly leaf and second fly leaf all are provided with the first spacing hole of equidistance distribution, first fixed plate and the equal sliding connection of second fixed plate have the spacer pin, spacer pin and the spacing cooperation of adjacent first spacing hole, the support frame is provided with first spacing groove, support frame sliding connection has the connecting plate that is located first spacing inslot, the connecting plate rigid coupling has the vascular sheath, vascular sheath rigid coupling has the sheath pipe, vascular sheath sliding connection has the expansion pipe, sheath pipe and expansion pipe sliding connection.
Further, one end of the dilating tube far away from the vascular sheath is semicircular, one end of the sheath tube far away from the vascular sheath is in a truncated cone shape, and one end of the truncated cone with small diameter is equal to the dilating tube in diameter.
Further, the support frame is provided with even and symmetric distribution's second spacing groove, and support frame sliding connection has even and symmetric distribution's gag lever post, and the gag lever post is located adjacent second spacing inslot, and the one end rigid coupling of gag lever post has the fixation clamp, and the other end rigid coupling of gag lever post has the fixed block, and the fixed block rigid coupling has the extrusion pole, extrusion pole and connecting plate contact, and the connecting plate is provided with even and symmetric distribution's second spacing hole, and second spacing hole and adjacent extrusion pole spacing cooperation.
Further, the lengths of the second limiting grooves which are uniformly and symmetrically distributed gradually increase from outside to inside.
Further, the opposite sides of the symmetrically distributed fixing clamps are arc-shaped, the radius of the arc-shaped part is equal to that of the sheath tube, and the distances between the symmetrically distributed fixing clamps and the axis of the sheath tube are equal.
Further, the second limiting groove is formed by a first sliding groove, a second sliding groove and a third sliding groove, the first sliding groove and the third sliding groove are inclined to the adjacent second sliding groove, and the extending direction of the second sliding groove is consistent with that of the first limiting groove.
Further, the length of the third sliding groove is longer than that of the first sliding groove, and the lengths of the third sliding grooves which are uniformly and symmetrically distributed gradually increase from outside to inside.
Further, the vascular sheath is connected with a rotating ring in a threaded manner, the vascular sheath is fixedly connected with a fixed ring, a piston plate is connected between the vascular sheath and the fixed ring in a sliding manner, the rotating ring is matched with the piston plate in a contact manner, a cavity is arranged between the fixed ring and the piston plate, gas is stored in the cavity between the fixed ring and the piston plate, an air bag is fixedly connected in the vascular sheath, the vascular sheath is provided with a gas runner, and the cavity between the fixed ring and the piston plate is communicated with the air bag through the gas runner.
Further, the balloon is annular, and when the balloon is inflated, the diameter of the inside of the balloon coincides with the diameter of the inside of the catheter.
Further, the fixed ring is fixedly connected with a fixed rod, the fixed rod is connected with a spring rod in a sliding mode, the spring rod is matched with the supporting frame, the piston plate is fixedly connected with a wedge block through a connecting rod, and the spring rod is provided with a through hole in limiting fit with the wedge block.
The beneficial effects of the invention are as follows: according to the invention, the positions of the first movable plate and the second movable plate are regulated, so that the support frame and the guide wire are in the same extension direction, and the medical staff presses the connecting plate to drive the vascular sheath, the sheath tube and the expansion tube to move along the extension direction of the guide wire, so that the medical staff is prevented from shifting in the process of inserting the sheath tube and the expansion tube into a blood vessel of a patient, and the puncture of the patient is torn to cause the injury of the patient; the different positions of the sheath tube are fixedly locked through the symmetrically distributed fixing clamps, so that the sheath tube and the expansion tube are prevented from being bent in the process of entering the blood vessel of a patient, the sheath tube and the expansion tube cannot be inserted into the blood vessel of the patient, and the puncture opening of the patient is prevented from being torn; the piston plate is extruded by the rotating ring, so that the gas in the piston plate and the fixed ring is pressed into the air bag, the air bag is expanded, the sheath pipe is extruded by the air bag, the sheath pipe is inwards sunken and contacted with the catheter, the air bag is matched with the sheath pipe to seal a gap between the catheter and the sheath pipe, the damage of the hemostatic valve is avoided, and the blood flows out of the vascular sheath to cause the blood loss of a patient.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic diagram showing the positional relationship between the support plate and the first fixing plate according to the present invention.
Fig. 3 is an enlarged view of the perspective structure of fig. 2 a according to the present invention.
Fig. 4 is a schematic diagram showing the positional relationship between the sheath tube and the fixing clip according to the present invention.
Fig. 5 is a schematic perspective view of the sheath and the stent of the present invention.
Fig. 6 is a schematic diagram of the positional relationship between the extrusion rod and the second limiting hole according to the present invention.
Fig. 7 is a schematic diagram of the positional relationship among the first chute, the second chute and the third chute according to the present invention.
FIG. 8 is a schematic diagram of the connection relationship between a fixing rod and a fixing ring according to the present invention.
FIG. 9 is a schematic view showing the positional relationship between a vascular sheath and a balloon according to the present invention.
Fig. 10 is an enlarged view of the perspective structure of fig. 8B according to the present invention.
In the above figures: 101: support plate, 102: first fixed plate, 103: first fly leaf, 104: second fixing plate, 105: second movable plate, 106: support frame, 107: first limiting hole, 108: stop pin, 109: first limit groove, 110: connection plate, 111: vascular sheath, 112: sheath, 113: expansion tube, 201: second limit groove, 202: limit lever, 203: fixation clamp, 204: fixed block, 205: extrusion rod, 206: second limiting hole, 207: first runner, 208: second chute, 209: third chute, 301: a rotating ring, 302: fixing ring, 303: piston plate, 304: airbag, 305: gas flow channels, 306: fixing rod, 307: spring rod, 308: wedge block, 309: and a through hole.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Example 1: 1-5, including two backup pads 101 of symmetric distribution, the left part rigid coupling of backup pad 101 has first fixed plate 102, first fixed plate 102 sliding connection has first fly leaf 103, the right part rigid coupling of backup pad 101 has second fixed plate 104, second fixed plate 104 sliding connection has second fly leaf 105, first fly leaf 103 rotates and is connected with support frame 106, both sides all are provided with the sliding tray around support frame 106 right part, support frame 106 is through the sliding tray on it and the spacing sliding fit of second fly leaf 105, first fly leaf 103 and second fly leaf 105 all are provided with equidistant first spacing hole 107 that distributes, the upper portion of first fixed plate 102 and second fixed plate 104 all sliding connection has spacing pin 108, spacing pin 108 and adjacent first spacing hole 107 spacing fit, the middle part of support frame 106 is provided with first spacing groove 109, the right side and the external intercommunication of spacing groove 109, the right side sliding connection of support frame 106 has connecting plate 110, connecting plate 110 and first spacing groove 109 spacing fit, the sliding connection of connecting plate 110 and first side groove 109, the sliding connection 111 is the diameter of the sheath tube 113 is equal to the expansion tube 113 that the diameter of the sheath tube 113 is equal to the sheath tube 113 is torn when the sheath tube is held in the same with the diameter of the patient's neck tube, the diameter of the sheath tube is held in the mouth of the sheath tube 112 is expanded by the diameter of the sheath tube 112, the diameter of the patient is equal to the expansion tube is avoided being torn when the diameter of the sheath tube is held by the patient's tube is expanded by the side of the side tube 112, the diameter of the sheath tube is expanded tube is 112 to the diameter of the side is expanded tube is 112 to be expanded by the diameter of the tube is the diameter of the side of the tube is 112 to be equal to the diameter of the side of the sheath tube is 112, the connecting plate 110 drives the sheath 112 and the expansion tube 113 to enter the puncture along the guide wire, so that the sheath 112 and the expansion tube 113 are prevented from being deviated when entering the puncture, and the puncture of a patient is prevented from being broken and damaged.
As shown in fig. 2, 6 and 7, the supporting frame 106 is provided with two groups of second limiting grooves 201, four second limiting grooves 201 are arranged in each group, the two groups of second limiting grooves 201 are opposite in direction, the lengths of the second uniformly and symmetrically distributed limiting grooves 201 are gradually increased from outside to inside, the supporting frame 106 is slidably connected with eight symmetrically distributed limiting rods 202, the limiting rods 202 are positioned in the adjacent second limiting grooves 201, the lower ends of the limiting rods 202 are fixedly connected with fixing clips 203, the opposite sides of the symmetrically distributed fixing clips 203 are arc-shaped, the radius of the arc-shaped parts is equal to the radius of the sheath 112, the fixing clips 203 are used for fixing and locking the sheath 112, the sheath 112 is prevented from being deviated, the distances between the symmetrically distributed fixing clips 203 and the axis of the sheath 112 are equal, the upper ends of the limiting rods 202 are fixedly connected with fixing blocks 204, the fixing blocks 204 are positioned above the supporting frame 106, the right side rigid coupling of fixed block 204 has extrusion pole 205, extrusion pole 205 and connecting plate 110 contact, connecting plate 110 is provided with eight second spacing holes 206 of symmetric distribution, the distance between two adjacent second spacing holes 206 is different, second spacing hole 206 and adjacent extrusion pole 205 spacing cooperation, second spacing groove 201 comprises first spout 207, second spout 208 and third spout 209, first spout 207 and third spout 209 all incline in adjacent second spout 208, and the incline direction is opposite, the length and the incline direction of every first spout 207 of group are the same, the extending direction of second spout 208 is unanimous with the extending direction of first spacing groove 109, the length of third spout 209 is greater than the length of first spout 207, evenly and the third spout 209 of symmetric distribution is from outside to inside its length gradually lengthens, with preventing mutual screens between the adjacent fixation clamp 203.
Before medical staff uses this device to intervene the treatment to the patient, medical staff first pierces the great vessel of patient's arm through the pjncture needle, insert the seal wire afterwards, and take out the pjncture needle, then medical staff begins to adjust the position of support frame 106, make the inclination of support frame 106 unanimous with the inclination of seal wire, medical staff places this device in the top of patient's arm, make support frame 106 be located the top of patient's arm, medical staff pulls out spacer pin 108 according to the contained angle of seal wire with the horizontal plane, and adjust the vertical position of first fly leaf 103 and second fly leaf 105, make the extending direction of support frame 106 unanimous with the extending direction of seal wire, then medical staff inserts spacer pin 108 in adjacent first spacing hole 107, thereby fix support frame 106, medical staff passes the expansion tube 113, vascular sheath 111 and sheath 112 seal wire, and make connecting plate 110 be located first spacing groove 109, sheath 112 and fixation clamp 203 are in same horizontal plane this moment.
Medical staff presses the connecting plate 110 to enable the connecting plate 110 to drive the vascular sheath 111, the sheath 112 and the expansion tube 113 to move downwards along the supporting frame 106 in an inclined mode, the expansion tube 113 and the sheath 112 are inserted into a blood vessel of a patient, the expansion tube 113 and the sheath 112 are always in the same straight line with a guide wire in the moving process of the expansion tube 113 and the sheath 112, position deviation is prevented when the expansion tube 113 and the sheath 112 enter the blood vessel of the patient, and puncture tearing of the patient is avoided to cause injury to the patient.
In the process of inserting the sheath 112 and the expansion tube 113 into the blood vessel of a patient, medical staff is required to pinch the ends of the sheath 112 and the expansion tube 113 to prevent the sheath 112 and the expansion tube 113 from bending in the process of entering the blood vessel, and the specific operation is as follows:
in the process that medical staff presses the connecting plate 110, eight extrusion rods 205 symmetrically distributed are extruded by the connecting plate 110, the extrusion rods 205 drive adjacent fixing blocks 204 to move leftwards, the fixing blocks 204 drive adjacent limiting rods 202 and adjacent fixing clamps 203 to move leftwards, the limiting rods 202 move along the first sliding grooves 207, the limiting rods 202 drive the adjacent fixing clamps 203 and the adjacent extrusion rods 205 to be close to the sheath 112, two symmetrically distributed fixing clamps 203 are in a group, when the limiting rods 202 enter the adjacent second sliding grooves 208 from the first sliding grooves 207, each group of fixing clamps 203 do not move forwards and backwards any more, and each group of fixing clamps 203 fixedly lock different positions of the sheath 112, so that the sheath 112 and the expansion tube 113 are prevented from bending in the process of entering blood vessels, and a puncture of a patient is prevented from being torn.
As the medical staff continues to press the connecting plate 110, the vascular sheath 111 and the sheath 112 enter the blood vessel of the patient, because the four lengths of each group of second limiting grooves 201 are different, the two limiting rods 202 at the outer side firstly enter the adjacent third sliding grooves 209, the two limiting rods 202 at the outer side drive the adjacent fixing clamps 203 and the adjacent extrusion rods 205 to be far away from the sheath 112, so that the leftmost group of fixing clamps 203 and the sheath 112 lose contact, when the limiting rods 202 at the outer side are positioned at the tail ends of the adjacent third sliding grooves 209, the extrusion rods 205 at the outer side enter the adjacent second limiting holes 206, the extrusion rods 205 at the outer side stop moving with the adjacent fixing clamps 203 to avoid contact with the puncture openings of the patient, the above actions are repeated, when the sheath 112 completely enters the blood vessel of the patient, at the moment, all fixing clamps 203 are not in contact with the sheath 112, and the horizontal positions of each group of fixing clamps 203 are different, so that each group of fixing clamps 203 are not clamped with each other, after the medical staff completes the treatment of the patient, the medical staff presses the blood vessel of the patient, and pulls the connecting plate 110 to the right, drives the sheath 110 to gradually move the hemostatic tube 112 away from the blood vessel of the patient 112 from the blood vessel of the patient, and the hemostatic tube 112 is gradually moved from the blood vessel of the patient 112.
Example two
Example 2: on the basis of the embodiment 1, as shown in fig. 8-10, a rotating ring 301 is connected with the middle part of a vascular sheath 111 in a threaded manner, a fixed ring 302 is fixedly connected with the vascular sheath 111, the fixed ring 302 is positioned at the left side of the rotating ring 301, an annular piston plate 303 is connected between the vascular sheath 111 and the fixed ring 302 in a sliding manner, gas is stored in a cavity between the fixed ring 302 and the piston plate 303, an annular air bag 304 is fixedly connected inside the vascular sheath 111, when a medical staff does not twist the rotating ring 301, the gas pressure in the air bag 304 is consistent with the atmospheric pressure, the vascular sheath 111 is provided with a circumferential array of gas flow channels 305, the cavity between the fixed ring 302 and the piston plate 303 is communicated with the air bag 304 through the gas flow channels 305, when the air bag 304 is full of gas, the inner diameter of the air bag 304 is consistent with the inner diameter of a catheter, the air bag 304 full of gas is matched with the catheter to block blood, the blood flowing out of the vascular sheath 111 is prevented, the blood loss of a patient is caused, the operation progress is influenced, two symmetrically distributed fixing rods 306 are fixedly connected to the fixing ring 302, the spring rods 307 are matched with the supporting frame 106, when the rotating ring 301 does not rotate, the spring rods 307 are not contacted with the supporting frame 106, the spring rods 307 are connected to the fixing rods 306 in a sliding mode, the piston plates 303 are fixedly connected with wedge blocks 308 through connecting rods, the cross sections of the wedge blocks 308 are right-angled triangles, the spring rods 307 are provided with through holes 309, the through holes 309 are in limit fit with the inclined surfaces of the wedge blocks 308, the spring rods 307 squeeze the supporting frame 106, friction force between the connecting plates 110 and the spring rods 307 is increased, and therefore the connecting plates 110, the sheath tubes 112 and the vascular sheath 111 are more stable, and the situation that the connecting plates 110, the sheath tubes 112 and the vascular sheath 111 move in the operation process is avoided, so that puncture openings of the patient are torn, and normal operation is influenced is avoided.
After the sheath 112 completely enters the vessel of the patient, the medical staff pulls out the guide wire and the expansion tube 113, inserts the long guide wire and the guide tube into the vessel sheath 111, the medical staff twists the rotating ring 301 to drive the piston plate 303 to move leftwards, the piston plate 303 extrudes the gas between the fixed ring 302 and the piston plate 303, the gas enters the air bag 304 through the gas flow channel 305, the air bag 304 is expanded, the air bag 304 extrudes the sheath 112, the extruded position of the sheath 112 is slightly concave inwards, but does not extrude the guide tube and is attached to the outer wall of the guide tube, at the moment, the guide tube can still move normally, the gap between the guide tube and the sheath 112 is blocked through the cooperation of the air bag 304 and the sheath 112, and the damage or poor quality of the hemostatic valve is avoided, so that the blood flows out of the vessel of the patient through the vessel sheath 111, and the blood loss of the patient is excessive.
In the process that the piston plate 303 is driven by the rotating ring 301 to move leftwards, the piston plate 303 drives the adjacent wedge block 308 to move leftwards through the connecting plate 110, the inclined surface of the wedge block 308 presses the through hole 309 to enable the spring rod 307 to move upwards, the upper side surface of the spring rod 307 is contacted with the lower side surface of the supporting frame 106, the spring rod 307 is compressed, friction force between the connecting plate 110 and the spring rod 307 is increased, when the air bag 304 is filled with air, the position of the rotating ring 301 is the limit position, the spring rod 307 is compressed to the maximum compression amount, friction force between the connecting plate 110 and the spring rod 307 is the maximum value, the connecting plate 110 and the vascular sheath 111 are enabled to be more stable through increasing friction force between the connecting plate 110 and the spring rod 307, and medical staff is prevented from carelessly contacting the connecting plate 110 or the vascular sheath 111 in the process of treating a patient, so that the vascular sheath 111 is inclined, a patient puncture is torn, and the positions of a long catheter and a guide wire are influenced, and vascular rupture of the patient may be caused.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted equally without departing from the spirit and scope of the technical solution of the present invention.
Claims (8)
1. A medical vascular sheath with a positioning function is characterized in that: the vascular sheath (111) is fixedly connected with a connecting plate (110) positioned in the first limiting groove (109), the connecting plate (110) is fixedly connected with a vascular sheath (111), the vascular sheath (111) is fixedly connected with a vascular sheath (112) in a sliding manner, and the vascular sheath (112) is connected with the expanding tube (112) in a sliding manner; the support frame (106) is provided with second limit grooves (201) which are uniformly and symmetrically distributed, the support frame (106) is connected with limit rods (202) which are uniformly and symmetrically distributed in a sliding manner, the limit rods (202) are positioned in the adjacent second limit grooves (201), one end of each limit rod (202) is fixedly connected with a fixing clamp (203), the other end of each limit rod (202) is fixedly connected with a fixing block (204), each fixing block (204) is fixedly connected with an extrusion rod (205), each extrusion rod (205) is in contact with the corresponding connection plate (110), each connection plate (110) is provided with second limit holes (206) which are uniformly and symmetrically distributed, and each second limit hole (206) is in limit fit with each adjacent extrusion rod (205); the lengths of the second limiting grooves (201) which are uniformly and symmetrically distributed gradually increase from outside to inside.
2. A medical vascular sheath with positioning function as defined in claim 1, wherein: one end of the expansion tube (113) far away from the vascular sheath (111) is semicircular, one end of the sheath tube (112) far away from the vascular sheath (111) is in a truncated cone shape, and one end with a small diameter of the truncated cone is equal to the diameter of the expansion tube (113).
3. A medical vascular sheath with positioning function as defined in claim 1, wherein: the opposite sides of the symmetrically distributed fixing clamps (203) are arc-shaped, the radius of the arc-shaped part is equal to that of the sheath tube (112), and the distances between the symmetrically distributed fixing clamps (203) and the axis of the sheath tube (112) are equal.
4. A medical vascular sheath with positioning function as defined in claim 1, wherein: the second limiting groove (201) is composed of a first sliding groove (207), a second sliding groove (208) and a third sliding groove (209), the first sliding groove (207) and the third sliding groove (209) are inclined to the adjacent second sliding groove (208), and the extending direction of the second sliding groove (208) is consistent with that of the first limiting groove (109).
5. A medical vascular sheath with positioning function as defined in claim 4, wherein: the length of the third sliding groove (209) is longer than that of the first sliding groove (207), and the lengths of the third sliding grooves (209) which are uniformly and symmetrically distributed gradually increase from outside to inside.
6. A medical vascular sheath with positioning function as defined in claim 1, wherein: the vascular sheath (111) is connected with the rotation ring (301) in a threaded mode, the vascular sheath (111) is fixedly connected with the fixing ring (302), a piston plate (303) is connected between the vascular sheath (111) and the fixing ring (302) in a sliding mode, the rotation ring (301) is matched with the piston plate (303) in a contact mode, a cavity is formed between the fixing ring (302) and the piston plate (303), gas is stored in the cavity between the fixing ring (302) and the piston plate (303), an air bag (304) is fixedly connected in the vascular sheath (111), the vascular sheath (111) is provided with a gas flow channel (305), and the cavity between the fixing ring (302) and the piston plate (303) is communicated with the air bag (304) through the gas flow channel (305).
7. A medical vascular sheath with positioning function as defined in claim 6, wherein: the balloon (304) is annular in shape and when the balloon (304) is filled with gas, the diameter of the inside of the balloon (304) coincides with the diameter of the inside of the catheter.
8. A medical vascular sheath with positioning function as defined in claim 6, wherein: the fixed ring (302) is fixedly connected with a fixed rod (306), the fixed rod (306) is connected with a spring rod (307) in a sliding mode, the spring rod (307) is matched with the supporting frame (106), the piston plate (303) is fixedly connected with a wedge block (308) through a connecting rod, and the spring rod (307) is provided with a through hole (309) in limit fit with the wedge block (308).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310680290.8A CN116407734B (en) | 2023-06-09 | 2023-06-09 | Medical vascular sheath with positioning function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310680290.8A CN116407734B (en) | 2023-06-09 | 2023-06-09 | Medical vascular sheath with positioning function |
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| Publication Number | Publication Date |
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| CN116407734A CN116407734A (en) | 2023-07-11 |
| CN116407734B true CN116407734B (en) | 2023-08-22 |
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| CN215309493U (en) * | 2020-12-29 | 2021-12-28 | 南京市江宁医院 | Fixing device of vein catheterization |
| CN215960170U (en) * | 2020-12-31 | 2022-03-08 | 中国人民解放军总医院第一医学中心 | Micro-puncture blood vessel sheath set |
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| EP2862521A4 (en) * | 2012-06-14 | 2016-04-06 | Terumo Corp | Puncture device |
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| CN213465218U (en) * | 2020-07-08 | 2021-06-18 | 王钰萍 | Fixing device for sheath of thrombolytic catheter |
| CN214231466U (en) * | 2020-12-03 | 2021-09-21 | 天津方普生物科技有限公司 | Limiting device of disposable artery puncture needle for neurosurgery |
| CN215309493U (en) * | 2020-12-29 | 2021-12-28 | 南京市江宁医院 | Fixing device of vein catheterization |
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| CN215960170U (en) * | 2020-12-31 | 2022-03-08 | 中国人民解放军总医院第一医学中心 | Micro-puncture blood vessel sheath set |
| CN215306498U (en) * | 2021-03-22 | 2021-12-28 | 合肥市第二人民医院 | Angle-adjustable blood vessel puncture sheath fixing device |
| CN113181504A (en) * | 2021-04-07 | 2021-07-30 | 湖南博润医疗器械有限公司 | Vascular sheath group |
| CN113100890A (en) * | 2021-05-13 | 2021-07-13 | 杨水华 | Can fix a position cardiovascular intervention piercing depth |
| CN215273211U (en) * | 2021-06-21 | 2021-12-24 | 长春中医药大学 | Multi-specification medical puncture needle clamping mechanism |
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| CN116407734A (en) | 2023-07-11 |
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