CN219480076U - Catheter special for measuring central venous pressure - Google Patents

Abstract

The application discloses a special catheter for central venous pressure measurement, and relates to the technical field of medical appliances. The application includes buret and adjustment seat, be fixed with the fixed plate on the adjustment seat, fixed plate one side is provided with the angle scale mark. This application can make patient's shoulder fixed when two grip blocks are close to each other, patient's head stretches forward and can drive the adhesion board dwang and rotate along the junction with the dwang when the back, thereby can make the pointer rotate along the junction with the dwang, and then can measure patient's head and stretch forward and the angle of back through pointer and angle scale mark, add patient's head and stretch forward and the angle of back at last and can obtain patient's neck mobility, normal neck stretches the scope at 165 degrees-90 degrees, if neck stretches less than 90 degrees, can judge that the patient is difficult air flue, so can avoid the subjectivity big and the big problem of deviation that the evaluation of naked eye caused with experience as far as possible.

Description

Catheter special for measuring central venous pressure

Technical Field

The application relates to the technical field of medical instruments, in particular to a catheter special for central venous pressure measurement.

Background

The central venous pressure refers to the pressure of the right atrium and the chest section of the superior and inferior vena cava. It can judge the comprehensive conditions of blood volume, cardiac function and vascular tension of patient, and is different from the peripheral venous pressure. The latter is affected by the venous lumen valve and other mechanical factors, so that the conditions of blood volume, heart function and the like cannot be reflected exactly.

The prior China publication (issued publication number: CN 209404764U) discloses a special catheter for measuring central venous pressure, which comprises a measuring catheter and a zero line alignment adjusting seat. In the utility model, the measuring section of the measuring catheter is kept vertical by the vertical fixing frame, so that the measuring accuracy is improved; the zero line alignment adjustment seat is adopted, so that the zero scale line and the axillary midline can be aligned quickly and conveniently; the integrated design of the conduit and the three-way valve reduces joints and reduces the incidence rate of infection; the vertical guide pipe is provided with scale marks, so that CVP detection numbers can be conveniently read, and the accuracy of reading is improved.

However, before practical use, the patient needs to be anesthetized, the airway assessment needs to be performed only by anesthesia, and the current airway assessment mode is visually assessed and observed by doctors, so that the problems of high subjectivity and large deviation exist.

Disclosure of Invention

The purpose of the present application is: in order to solve the problems of large subjectivity and large deviation existing in the current airway assessment mode which is carried out by naked eyes for assessment and observation by doctors, the application provides a special catheter for central venous pressure measurement.

The application specifically adopts the following technical scheme for realizing the purposes:

the utility model provides a special pipe of central venous pressure measurement, includes survey buret and adjustment seat, be fixed with the fixed plate on the adjustment seat, fixed plate one side is provided with the angle scale mark, it is connected with the dwang to rotate through the damping pivot on the fixed plate, one side that the dwang is close to the angle scale mark is fixed with the pointer, the movable groove has been seted up on the fixed plate, the fixed plate is located movable groove sliding connection has two grip blocks, be provided with the power component that is used for driving two grip blocks and is close to each other on the fixed plate, dwang one end is fixed with the connecting plate, the spout has been seted up on the connecting plate, the connecting plate is located sliding connection in the spout has the adhesion board, be provided with the fixed subassembly that is used for fixed adhesion board in the connecting plate.

By adopting the technical scheme, the head and neck activity degree of the patient can be obtained by adding the forward extending angle and the backward extending angle of the head of the patient, and the normal head and neck extending range is 165-90 degrees, for example, the head and neck extending range is less than 90 degrees, so that the patient can be judged to be a difficult airway, and the problems of large subjectivity and large deviation caused by naked eye observation and experience evaluation can be avoided as much as possible.

Further, the power component comprises a bidirectional threaded rod which is rotationally connected in the fixed plate, threads with opposite rotation directions are arranged at two ends of the bidirectional threaded rod, the bidirectional threaded rod is located in the movable groove, two ends of the bidirectional threaded rod are respectively in threaded connection with the two clamping plates, and a crank is fixed at one end of the bidirectional threaded rod.

By adopting the technical scheme, the two clamping plates can be driven to be close to or far away from each other when the crank is rotated.

Further, the fixed subassembly is including setting up the knob in connecting plate one side, one side that the knob is close to the adhesion board is fixed with fastening bolt, set up the through groove on the connecting plate, fastening bolt inserts and establishes in the through groove, set up the screw hole of adaptation fastening bolt on the adhesion board, knob one side is contradicted with the connecting plate.

Through adopting above-mentioned technical scheme for knob one side is contradicted with the connecting plate, thereby can fix the adhesion board.

Further, the measuring tube comprises a vertical guide tube and a horizontal guide tube, a pressure scale mark is arranged on the vertical guide tube, a zero scale mark of the pressure scale mark is arranged at the lowest end of the vertical guide tube, a fixing groove is formed in the adjusting seat, the fixing groove is mutually matched with the horizontal guide tube, a right-angle fixing frame is arranged on one side, close to the vertical guide tube, of the adjusting seat, an L-shaped clamping groove is formed in the right-angle fixing frame, and the joint of the vertical guide tube and the horizontal guide tube is clamped in the L-shaped clamping groove.

Through adopting above-mentioned technical scheme for vertical pipe is 90 degrees with horizontal pipe and is connected under the restriction of right angle mount, can conveniently read measurement data through the pressure scale mark.

Further, the vertical duct and the horizontal duct are connected by a bellows.

By adopting the technical scheme, dead angles can be avoided.

Further, one end of the horizontal conduit far away from the vertical conduit is connected with a three-way valve, and one of the three-way valves is integrally formed with the horizontal conduit.

By adopting the technical scheme, the other two connectors of the three-way valve are used for connecting the infusion set catheter and the central venous pressure catheter.

Further, the adjusting seat is provided with a level bar along the length direction of the horizontal guide pipe, a level bubble is arranged in the level bar, a supporting column is fixed at the bottom of the adjusting seat, a thread groove is formed in the supporting column, and supporting legs are connected in the thread groove in a threaded mode.

By adopting the technical scheme, the vertical guide pipe can be in a vertical state, so that the accuracy of measurement can be improved as much as possible.

Further, the top of the vertical guide pipe is provided with a hollow hook, the hook is communicated with the vertical guide pipe, one side of the hook is provided with an exhaust hole, and an exhaust cover is arranged at the position of the hook, which is positioned at the exhaust hole.

By adopting the technical scheme, the vertical guide pipe is hung on the infusion support, and exhaust can be conveniently carried out through the exhaust hole and the exhaust cover.

In summary, the present application includes at least one of the following benefits;

1. the patient shoulder can be fixed when two grip blocks are close to each other, the patient head can drive the adhesion plate dwang to rotate along the junction with the dwang when stretching forward and leaning backward to can make the pointer rotate along the junction with the dwang, and then can measure the angle of patient head forward and leaning backward through pointer and angle scale mark, finally add the angle of patient head forward and leaning backward can obtain patient's neck mobility, and normal neck stretches the scope and is 165 degrees-90 degrees, if neck stretches less than 90 degrees, then can judge that the patient is difficult air flue, so as to avoid the subjectivity big and the big problem of deviation that the evaluation of naked eye and experience caused as far as possible.

2. The length of the supporting legs extending out of the supporting columns can be adjusted by rotating the supporting legs, so that the levelness of the adjusting seat can be adjusted, the adjusting seat can be in a horizontal state through the cooperation of the level bars and the level bubble, and then the vertical guide pipe can be in a vertical state, and the measuring accuracy can be improved as much as possible.

Drawings

FIG. 1 is a schematic perspective view of a device body of the present application;

FIG. 2 is a schematic view of the structure of the rotating rod in the present application;

fig. 3 is a schematic view of the structure of the bidirectional threaded rod in the present application.

Reference numerals illustrate:

1. a measuring tube; 2. an adjusting seat; 3. a fixing plate; 4. an angle scale mark; 5. a rotating lever; 6. a pointer; 7. a clamping plate; 8. a connecting plate; 9. an adhesive plate; 10. a power assembly; 101. a two-way threaded rod; 102. a crank; 111. a vertical conduit; 112. a horizontal conduit; 12. a fixing assembly; 121. a rotary knob; 122. a fastening bolt; 13. pressure scale marks; 14. a right-angle fixing frame; 15. a corrugated tube; 16. a three-way valve; 17. a level bar; 18. a vial; 19. a support column; 20. support legs; 21. an exhaust cover; 22. a hook.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-3.

The embodiment of the application discloses a special catheter for measuring central venous pressure.

Referring to fig. 1-3, a catheter special for central venous pressure measurement comprises a measuring tube 1 and an adjusting seat 2, wherein a fixed plate 3 is fixed on the adjusting seat 2, an angle scale mark 4 is arranged on one side of the fixed plate 3, a rotating rod 5 is rotationally connected to the fixed plate 3 through a damping rotating shaft, a pointer 6 is fixed on one side of the rotating rod 5, which is close to the angle scale mark 4, a movable groove is formed in the fixed plate 3, two clamping plates 7 are slidably connected in the movable groove, a power assembly 10 for driving the two clamping plates 7 to be close to each other is arranged on the fixed plate 3, a connecting plate 8 is fixed at one end of the rotating rod 5, a sliding groove is formed in the connecting plate 8, an adhesion plate 9 is slidably connected in the sliding groove, and a fixing assembly 12 for fixing the adhesion plate 9 is arranged in the connecting plate 8. When the airway of a patient needs to be evaluated before anesthesia, the shoulders of the patient are positioned between the two clamping plates 7, the shoulders are parallel to the two clamping plates 7, the pointer 6 is firstly rotated to the position in the middle of the angle scale marks 4, the adhesive plate 9 can be moved to the position in the middle of the fixed plate 3, the adhesive plate 9 is moved, the adhesive plate 9 is parallel to the forehead of the patient, after the position of the adhesive plate 9 is determined, the adhesive plate 9 can be fixed through the fixing component 12, the head of the patient is adhered to the adhesive plate 9 through an adhesive tape, the two clamping plates 7 can be driven to be mutually close to or far away from each other through the power component 10, the shoulders of the patient can be fixed when the two clamping plates 7 are mutually close to each other, the head of the patient can drive the rotating rod 5 of the adhesion plate 9 to rotate along the joint with the rotating rod 5 when stretching forwards and leaning backwards, so that the pointer 6 can rotate along the joint with the rotating rod 5, the angle of the head of the patient stretching forwards and leaning backwards can be measured through the pointer 6 and the angle scale mark 4, finally the head and neck activity degree of the patient can be obtained by adding the angles of the head of the patient stretching forwards and leaning backwards, the normal head and neck stretching range is 165-90 degrees, and if the head and neck stretching is less than 90 degrees, the patient can be judged to be a difficult airway, and the problems of large subjectivity and large deviation caused by visual observation and experience assessment can be avoided as much as possible.

Referring to fig. 1 and 3, the power assembly 10 includes a bidirectional threaded rod 101 rotatably connected in the fixed plate 3, threads with opposite rotation directions are provided at two ends of the bidirectional threaded rod 101, the bidirectional threaded rod 101 is located in the movable groove, two ends of the bidirectional threaded rod 101 are respectively in threaded connection with the two clamping plates 7, and a crank 102 is fixed at one end of the bidirectional threaded rod 101. The crank 102 can drive the bidirectional threaded rod 101 to rotate, and as threads with opposite rotation directions are arranged at the two ends of the bidirectional threaded rod 101, the two ends of the bidirectional threaded rod 101 are respectively in threaded connection with the two clamping plates 7, and accordingly the two clamping plates 7 can be driven to be close to or far away from each other when the bidirectional threaded rod 101 rotates.

Referring to fig. 1 and 2, the fixing assembly 12 includes a knob 121 disposed at one side of the connection plate 8, a fastening bolt 122 is fixed at one side of the knob 121 near the adhesion plate 9, a through slot is formed in the connection plate 8, the fastening bolt 122 is inserted into the through slot, a threaded hole for adapting the fastening bolt 122 is formed in the adhesion plate 9, and one side of the knob 121 abuts against the connection plate 8. When the adhesion plate 9 needs to be fixed, the rotation knob 121 can drive the fastening bolt 122 to rotate, so that the fastening bolt 122 can be screwed into the threaded hole when the fastening bolt 122 rotates, and one side of the rotation knob 121 can be abutted against the connecting plate 8, so that the adhesion plate 9 can be fixed.

Referring to fig. 1, a measuring tube 1 includes a vertical tube 111 and a horizontal tube 112, a pressure scale line 13 is provided on the vertical tube 111, a zero scale line of the pressure scale line 13 is at the lowest end of the vertical tube 111, a fixing groove is provided on an adjusting seat 2, the fixing groove is mutually matched with the horizontal tube 112, a right-angle fixing frame 14 is provided on one side of the adjusting seat 2 close to the vertical tube 111, an L-shaped clamping groove is provided on the right-angle fixing frame 14, and a joint of the vertical tube 111 and the horizontal tube 112 is clamped in the L-shaped clamping groove. The vertical duct 111 and the horizontal duct 112 are integrally formed, the horizontal duct 112 is placed in the fixing groove, then the right-angle fixing frame 14 is clamped at the joint of the vertical duct 111 and the horizontal duct 112, the vertical duct 111 and the horizontal duct 112 can be connected at 90 degrees under the limit of the right-angle fixing frame 14, and measurement data can be conveniently read through the pressure scale mark 13.

Referring to fig. 1, a vertical duct 111 and a horizontal duct 112 are connected by a bellows 15. Dead corners at the connection of the vertical duct 111 and the horizontal duct 112 can be avoided.

Referring to fig. 1, a three-way valve 16 is connected to an end of the horizontal duct 112 remote from the vertical duct 111, and one of the three-way valve 16 is integrally formed with the horizontal duct 112. The other two connectors of the three-way valve 16 are used to connect the infusion set catheter and the central venous pressure catheter.

Referring to fig. 1, the adjusting seat 2 is provided with a level bar 17 along the length direction of the horizontal conduit 112, a level bubble 18 is arranged in the level bar 17, a supporting column 19 is fixed at the bottom of the adjusting seat 2, a thread groove is formed in the supporting column 19, and supporting legs 20 are connected in the thread groove in a threaded manner. The length of the supporting legs 20 extending out of the supporting columns 19 can be adjusted by rotating the supporting legs 20, so that the levelness of the adjusting seat 2 can be adjusted, the adjusting seat 2 can be in a horizontal state by matching the level bars 17 with the level bubbles 18, and then the vertical guide tube 111 can be in a vertical state, and the measuring accuracy can be improved as much as possible.

Referring to fig. 1, a hook 22 having a hollow inside is provided at the top of a vertical duct 111, the hook 22 is communicated with the vertical duct 111, an exhaust hole is opened at one side of the hook 22, and an exhaust cover 21 is provided at the position of the hook 22 at the exhaust hole. The hanging hook 22 is hung on the infusion support, so that the vertical pipe 111 is hung on the infusion support, the air exhaust cover 21 is opened, and air exhaust can be performed through the air exhaust hole.

Working principle: when the airway of a patient needs to be evaluated before anesthesia, the shoulder of the patient is positioned between the two clamping plates 7, the shoulder is parallel to the two clamping plates 7, the pointer 6 is rotated to the position in the middle of the angle scale mark 4, the adhesion plate 9 is moved to the position in the middle of the fixed plate 3, the adhesion plate 9 is moved to enable the adhesion plate 9 to be parallel to the forehead of the patient, after the position of the adhesion plate 9 is determined, the rotation knob 121 can drive the fastening bolt 122 to rotate, the fastening bolt 122 can be screwed into the threaded hole when the fastening bolt 122 rotates, one side of the rotation knob 121 is abutted against the connecting plate 8, the adhesion plate 9 is fixed, the head of the patient is adhered to the adhesion plate 9 through an adhesive tape, the rotation crank 102 can drive the bidirectional threaded rod 101 to rotate, as the two ends of the bidirectional threaded rod 101 are provided with threads with opposite rotation directions, and two ends of the bi-directional threaded rod 101 are respectively in threaded connection with the two clamping plates 7, so that the two clamping plates 7 can be driven to be close to or far away from each other when the bi-directional threaded rod 101 rotates, the shoulders of a patient can be fixed when the two clamping plates 7 are close to each other, the rotating rod 5 of the adhesive plate 9 can be driven to rotate along the connecting part with the rotating rod 5 when the head of the patient stretches forwards and leans backwards, the pointer 6 can rotate along the connecting part with the rotating rod 5, the forward and backward angles of the head of the patient can be measured through the pointer 6 and the angle scale mark 4, finally, the head and neck activity degree of the patient can be obtained by adding the forward and backward angles of the head of the patient, the normal head and neck stretching range is 165-90 degrees, if the head and neck bending is less than 90 degrees, the patient can be judged to be a difficult airway, therefore, the problems of large subjectivity and large deviation caused by visual observation and experience evaluation can be avoided as much as possible. The length of the supporting legs 20 extending out of the supporting columns 19 can be adjusted by rotating the supporting legs 20, so that the levelness of the adjusting seat 2 can be adjusted, the adjusting seat 2 can be in a horizontal state by matching the level bars 17 with the level bubbles 18, and then the vertical guide tube 111 can be in a vertical state, and the measuring accuracy can be improved as much as possible.

Claims (8)

1. The utility model provides a special pipe of central venous pressure measurement, includes survey buret (1) and adjustment seat (2), its characterized in that: the adjustable fixing device is characterized in that a fixing plate (3) is fixed on the adjusting seat (2), an angle scale mark (4) is arranged on one side of the fixing plate (3), a rotating rod (5) is connected to the fixing plate (3) in a rotating mode through a damping rotating shaft, a pointer (6) is fixed on one side, close to the angle scale mark (4), of the rotating rod (5), a movable groove is formed in the fixing plate (3), two clamping plates (7) are connected in the movable groove in a sliding mode, a power assembly (10) used for driving the two clamping plates (7) to be close to each other is arranged on the fixing plate (3), a connecting plate (8) is fixed at one end of the rotating rod (5), a sliding groove is formed in the connecting plate (8), an adhesion plate (9) is connected in the sliding groove in a sliding mode, and a fixing assembly (12) used for fixing the adhesion plate (9) is arranged in the connecting plate (8).

2. The central venous pressure measurement dedicated catheter of claim 1, wherein: the power assembly (10) comprises a bidirectional threaded rod (101) which is rotationally connected in the fixed plate (3), threads with opposite rotation directions are arranged at two ends of the bidirectional threaded rod (101), the bidirectional threaded rod (101) is located in the movable groove, two ends of the bidirectional threaded rod (101) are respectively in threaded connection with the two clamping plates (7), and a crank (102) is fixed at one end of the bidirectional threaded rod (101).

3. The central venous pressure measurement dedicated catheter of claim 1, wherein: the fixing assembly (12) comprises a rotating button (121) arranged on one side of a connecting plate (8), a fastening bolt (122) is fixed on one side, close to the adhesion plate (9), of the rotating button (121), a through groove is formed in the connecting plate (8), the fastening bolt (122) is inserted into the through groove, a threaded hole for adapting to the fastening bolt (122) is formed in the adhesion plate (9), and one side of the rotating button (121) is abutted to the connecting plate (8).

4. The central venous pressure measurement dedicated catheter of claim 1, wherein: the measuring tube (1) comprises a vertical tube (111) and a horizontal tube (112), a pressure scale mark (13) is arranged on the vertical tube (111), a zero scale mark of the pressure scale mark (13) is arranged at the lowest end of the vertical tube (111), a fixing groove is formed in the adjusting seat (2), the fixing groove is mutually matched with the horizontal tube (112), a right-angle fixing frame (14) is arranged on one side, close to the vertical tube (111), of the adjusting seat (2), an L-shaped clamping groove is formed in the right-angle fixing frame (14), and the joint of the vertical tube (111) and the horizontal tube (112) is clamped in the L-shaped clamping groove.

5. The central venous pressure measurement dedicated catheter of claim 4, wherein: the vertical duct (111) and the horizontal duct (112) are connected by a bellows (15).

6. The central venous pressure measurement dedicated catheter of claim 4, wherein: one end of the horizontal conduit (112) far away from the vertical conduit (111) is connected with a three-way valve (16), and one of the three-way valve (16) is integrally formed with the horizontal conduit (112).

7. The central venous pressure measurement dedicated catheter of claim 4, wherein: the adjusting seat (2) is provided with a level bar (17) along the length direction of the horizontal guide pipe (112), a level bubble (18) is arranged in the level bar (17), a supporting column (19) is fixed at the bottom of the adjusting seat (2), a thread groove is formed in the supporting column (19), and supporting legs (20) are connected with the thread groove in a threaded mode.

8. The central venous pressure measurement dedicated catheter of claim 4, wherein: the top of the vertical duct (111) is provided with a hook (22) with a hollow inside, the hook is communicated with the vertical duct (111), one side of the hook is provided with an exhaust hole, and an exhaust cover (21) is arranged at the position of the exhaust hole of the hook.