CN220159032U

CN220159032U - Spiral pressure extension tube

Info

Publication number: CN220159032U
Application number: CN202320809129.1U
Authority: CN
Inventors: 彭红军; 郭广军; 侯贵兵
Original assignee: Shuangjiu Medical Technology Tianjin Co ltd
Current assignee: Shuangjiu Medical Technology Tianjin Co ltd
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-12-12
Anticipated expiration: 2033-04-13

Abstract

The utility model provides a spiral pressure extension tube, which relates to the technical field of medical extension tubes and comprises a PVC tube, wherein a spiral extension tube in a spiral shape is arranged at the central part of the PVC tube, tube connecting ends are arranged at two ends of the spiral extension tube, a box body for sealing the spiral extension tube is arranged at the outer side of the spiral extension tube, guide-out holes for the tube connecting ends to penetrate out are arranged on the surfaces of two sides of the box body, a length limiting part for limiting the length of the spiral extension tube extending out of the box body is arranged on the guide-out holes in the box body, the length limiting part comprises a guide tube and a length limiting block, the guide tube is fixedly arranged on the guide-out holes in the box body, a limiting hole is formed in one side wall of the guide tube, and a length limiting block for compacting and fixing the length of the spiral extension tube extending out of the box body is movably arranged in the limiting hole. In the process of adjusting the length of the spiral extension pipe, only the length limiting block is required to be moved outwards, other auxiliary tools are not required, and pollution to the spiral extension pipe is avoided.

Description

Spiral pressure extension tube

Technical Field

The utility model relates to the technical field of medical extension tubes, in particular to a spiral pressure extension tube.

Background

The pressure extension tube is mainly used for clinically connecting pipelines, transferring fluid, transferring blood and the like which need to monitor the pressure. Because the traditional pressure extension tube is longer, the pressure extension tube is coiled into a plurality of circles in a paper plastic bag when leaving the factory. When the pressure extension tube is extruded for a long time in the transportation process, deformation and kinking can be generated, so that the effects of transfusion and blood transfusion are affected.

The utility model patent with the bulletin number of CN213158946U discloses an adjustable medical extension tube, which comprises a housing, openings are formed in the right side of the top of the housing and the left side of the bottom of the housing, the middle parts of the two sides of the housing are fixedly connected with rotating shafts in a penetrating manner, one side, opposite to the two rotating shafts, of the housing extends to the inner cavity of the housing and is sleeved with a shell, the inner cavity of the shell is fixedly and movably connected with a spring, the other end of the spring is fixedly connected with the rotating shaft, and the inner cavity of a shell sleeve is movably connected with a positioning bolt.

When the utility model is used, the positioning bolts are unscrewed, then the two ends of the extension tube are grasped, the extension tube is pulled out towards the two sides by force, and the extension tube is adjusted to the required length.

However, in actual use, the positioning bolt is unscrewed by using tools such as a screwdriver and the like when the utility model is needed, so that the length of the extension tube is adjusted, the operation steps are complicated, the common screwdriver is not subjected to disinfection and sterilization treatment, and pollution is easily caused to the extension tube in the use process.

Disclosure of Invention

In order to solve the technical problems that in the prior art, tools are needed for adjusting the length of an extension tube and pollution is easily caused to the extension tube in the adjusting process, the utility model provides a spiral pressure extension tube;

the utility model provides a spiral pressure extension tube, which adopts the following technical scheme:

the utility model provides a spiral pressure extension pipe, includes the PVC pipe, PVC pipe center part has spiral extension pipe of spiral shape, spiral extension pipe both ends are provided with the body link, are provided with its confined box body in spiral extension pipe outside, box body both sides surface is provided with the export hole that supplies the body link to wear out, is provided with the length limiting part that restriction spiral extension pipe stretched out box body length in the box body on exporting the hole, its characterized in that, the length limiting part that shows includes stand pipe and length stopper, the stand pipe is fixed to be set up on exporting the hole in the box body, the outside extension of both ends body link through the stand pipe on the PVC pipe is provided with the spacing hole on the stand pipe lateral wall, this spacing downthehole activity is provided with the length stopper that compresses tightly fixedly to the length that the spiral extension pipe stretched out the box body.

Further, the box body is composed of an upper shell and a lower shell hinged with one side of the upper shell, an elastic locking block is arranged on the end face of the other side of the upper shell, and a clamping groove which can enable the elastic locking block to be clamped in is formed in the position, opposite to the elastic locking block, of the end part of the upper shell, of the lower shell.

Further, the upper parts of the spiral extension pipes are respectively provided with a fastening layer with hardness higher than that of the spiral extension pipes, the surfaces of the fastening layers are provided with friction layers, and the fastening layers are pressed and fixed by the length limiting blocks, so that the length of the spiral extension pipes extending out of the box body is fixed.

Further, the surface of the length limiting block, which is in contact with the fastening layer, is provided with an arc-shaped structure with the same curvature as the fastening layer.

Further, the structure of length limiting part still includes the locating plate, the locating plate sets up on the surface of fixed stand pipe in the box body, be provided with the pull rod on the surface of keeping away from stand pipe one side on the length stopper, be provided with the through-hole that supplies the pull rod to pass on the locating plate, one side terminal surface that the length stopper was kept away from to the pull rod passes through the through-hole on the locating plate, be provided with the arm-tie on its tip is provided with the arm-tie on the locating plate through-hole is close to length stopper one side surface, the inside diameter of arm-tie is greater than the diameter of through-hole on the locating plate, be provided with the elastomeric element that supplies the pull rod to pass between the arm-tie and the through-hole on the locating plate, elastomeric element's one end is fixed with the locating plate, and the other end and length stopper external surface fixed setting, the length stopper compresses tightly fixedly to the fastening layer under the elasticity effect of this elastomeric element.

Further, the elastic component arranged between the spring limit sleeve and the through hole on the positioning plate is a thrust spring.

Further, the one side terminal surface that length stopper was kept away from to the pull rod still is provided with the locking platform, slides on the surface that length stopper one side was kept away from to the locating plate and is provided with the fixed plate, be provided with the arch on the locking platform, be provided with on the fixed plate with the slotted hole of protruding joint on the locking platform, be provided with tension spring between fixed plate and the box body outer wall, under tension spring's elasticity effect, with the fixed plate taut to the locating plate bottom, make the fixed plate keep away from the locking platform.

Furthermore, the connecting ends of the pipe bodies at the two ends of the PVC pipe are respectively provided with an inner cone locking joint and a connecting pipe joint for connecting other parts, the other connecting end of the connecting pipe joint is connected with a rotary outer cone locking joint, and an O-shaped sealing ring for preventing liquid in the PVC pipe from leaking is arranged inside the rotary outer cone locking joint.

In summary, the beneficial effects of the utility model are as follows:

1. according to the utility model, the PVC pipe central extension pipe is arranged as the spiral extension pipe, so that the extension pipe can automatically form a spiral shape when placed in the box body, manual winding is not needed, and the assembly of an operator is facilitated.

2. According to the utility model, the fastening layers with the friction layers are arranged at the upper parts of the spiral extension pipes, the guide pipes are arranged on the guide holes on the shell, the length limiting blocks which are used for pushing the fastening layers under the action of elasticity so as to fix the spiral extension pipes are arranged on the guide pipes, the thrust springs are compressed by the length limiting blocks by pushing the pulling plates outwards, the length limiting blocks are far away from the fastening layers on the spiral extension pipes, and the spiral extension pipes are pulled outwards, so that the length of the spiral extension pipes is adjusted; after the adjustment is finished, the pulling plate is loosened, and the fastening layer on the spiral extension pipe is pushed tightly by the length limiting block under the elastic action of the thrust spring, so that the length of the spiral extension pipe is fixed.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a schematic front view of the present utility model;

FIG. 4 is a cross-sectional view taken along the line A-A in FIG. 3 in accordance with the present utility model;

FIG. 5 is an enlarged view of the portion B of FIG. 3 in accordance with the present utility model;

fig. 6 is an enlarged view of the portion C of fig. 4 in accordance with the present utility model.

The following figures are shown: 1-a box body; 2-PVC pipe; 3-a length defining member; 4-inner cone locking joint; 5-connecting pipe joint; 6-O-shaped sealing rings; 7-a rotary outer cone locking joint; 101-an upper housing; 102-a lower housing; 103-an elastic locking piece; 104-clamping grooves; 201, connecting ends of the tube body; 202-a spiral extension tube; 203-a fastening layer; 301-guiding tube; 302-a length limiting block; 303-thrust spring; 304-a spring stop collar; 305-a pull rod; 306-pulling plate; 307-locking stage; 308-fixing plate; 309-tension spring; 310-locating plate.

Detailed Description

The utility model will be further described with reference to specific examples, illustrative examples and illustrations of which are provided herein to illustrate the utility model, but are not to be construed as limiting the utility model.

Examples: a spiral pressure extension tube as shown in figures 1, 2, 3, 4, 5 and 6.

As shown in fig. 1, a spiral pressure extension tube comprises a PVC tube 2, a spiral extension tube 202 with a spiral shape is arranged at the center of the PVC tube 2, tube connecting ends 201 are arranged at two ends of the spiral extension tube 202, a box body 1 for sealing the spiral extension tube 202 is arranged at the outer side of the spiral extension tube 202, guiding holes for the tube connecting ends 201 to penetrate are arranged on two side surfaces of the box body 1, the box body 1 is composed of an upper shell 101 and a lower shell 102 hinged with one side of the upper shell 101, an elastic locking block 103 is arranged on the end face of the other side of the upper shell 101, and a clamping groove 104 for enabling the elastic locking block 103 to be clamped in is arranged at the opposite position of the elastic locking block 103 on the end part of the lower shell 102 and the end part of the upper shell 101. A length limiting member 3 for limiting the length of the spirally extending tube 202 extending out of the cartridge body 1 is provided at the outlet hole in the cartridge body 1. As shown in fig. 2, an inner cone locking joint 4 and a connecting joint 5 for connecting other components are respectively arranged on the pipe body connecting ends 201 at two ends of the PVC pipe 2, wherein the other connecting end of the connecting joint 5 is connected with a rotary outer cone locking joint 7, and an O-shaped sealing ring 6 for preventing liquid leakage in the PVC pipe 2 is arranged inside the rotary outer cone locking joint 7. When the PVC pipe conveying device is used, the box body 1 for sealing the spiral extension pipe 202 is arranged on the outer side of the spiral extension pipe 202, so that the box body 1 plays a role in protecting the spiral extension pipe 202, and the problem that the spiral extension pipe 202 deforms to influence later use due to extrusion of the spiral extension pipe 202 in the PVC pipe 2 in the process of conveying or moving the PVC pipe 2 is prevented.

The specific structure of the length limiting part 3 is shown in fig. 3-6, and comprises a guide pipe 301 and a length limiting block 302, wherein the guide pipe 301 is fixedly arranged on a guide hole in the box body 1, and the connecting ends 201 of the two ends of the PVC pipe 2 extend outwards through the guide pipe 301. A limiting hole is formed in one side wall of the guide tube 301, and a length limiting block 302 for fixing the length of the spiral extension tube 202 extending out of the box body 1 is movably arranged in the limiting hole. Every 0 meter of the connecting pipe joint is provided with a fastening layer 203 on the spiral extension pipe 202, and the surface of the fastening layer 203 is provided with a friction layer. By providing the fastening layer 203, not only the friction force on the surface of the spiral extension tube 202 can be increased, but also the hardness of the spiral extension tube 202 is increased, so that the spiral extension tube 202 is not easy to deform when being subjected to external force.

As shown in fig. 5 and 6, the structure of the length limiting member 3 in the present utility model further includes a positioning plate 310, the positioning plate 310 is disposed on the outer surface of the fixed guide tube 301 in the case 1, the surface of the length limiting block 302 contacting the fastening layer 203 has an arc structure identical to the curvature of the fastening layer 203, and a cylindrical pull rod 305 is disposed on the outer surface of the side of the length limiting block 302 far from the guide tube 301. The positioning plate 310 is provided with a through hole for the pull rod 305 to pass through, one side end surface of the pull rod 305 far away from the length limiting block 302 passes through the through hole on the positioning plate 310, and the end part of the pull rod is provided with a pull plate 306. The positioning plate 310 is provided with a spring stop collar 304 for the pull rod 305 to pass through on the surface of one side of the through hole close to the length limiting block 302, the diameter of the inside of the spring stop collar 304 is larger than that of the through hole on the positioning plate 310, a thrust spring 303 for the pull rod 305 to pass through is arranged between the spring stop collar 304 and the through hole on the positioning plate 310, one end of the thrust spring 303 is fixedly arranged with the positioning plate 310, and the other end of the thrust spring 303 is fixedly arranged with the outer surface of the length limiting block 302.

When the size of the spiral extension tube 202 extending out of the box body 1 is adjusted, the pull plate 306 is pulled outwards, the pull plate 306 drives the length limiting block 302 to move outwards, the size of the pull rod 305 between the length limiting block 302 and the positioning plate 310 is shortened, the outer surface of the length limiting block 302 compresses the thrust spring 303, at the moment, the length limiting block 302 is far away from the fastening layer 203, the contact position of the spiral extension tube 202 and the guide tube 301 is in an active state, the spiral extension tube 202 is pulled towards the outer side of the box body 1, so that the length of the spiral extension tube 202 extending out of the box body 1 is adjusted, after the adjustment is finished, the pull plate 306 is loosened, the length limiting block 302 is contacted with the fastening layer 203 on the spiral extension tube 202 under the action of the elasticity of the thrust spring 303, the fastening layer 203 is extruded, and the fastening layer 203 is fixed between the guide tube 301 and the length limiting block 302 under the action of friction force of the length limiting block 302, so that the length of the spiral extension tube 202 extending out of the box body 1 is fixed.

As shown in fig. 5, as a modification of the previous embodiment, a locking table 307 is further provided on an end surface of the pull rod 305 on a side far away from the length limiting block 302, a fixing plate 308 is slidably provided on an outer surface of the positioning plate 310 on a side far away from the length limiting block 302, a protrusion is provided on the locking table 307, a slot hole engaged with the protrusion on the locking table 307 is provided on the fixing plate 308, a tension spring 309 is provided between the fixing plate 308 and an outer wall of the box body 1, and the fixing plate 308 is tensioned toward the bottom of the positioning plate 310 under the action of the elasticity of the tension spring 309, so that the fixing plate 308 is far away from the locking table 307.

When the size of the spiral extension tube 202 extending out of the box body 1 is adjusted, the pull plate 306 is pulled outwards, the fixing plate 308 is moved upwards, the length limiting block 302 is far away from the spiral extension tube 202, the locking table 307 is clamped into the slotted hole on the fixing plate 308, the positions of the pull rod 305 and the length limiting block 302 are fixed, at the moment, the spiral extension tube 202 is in an active state, size adjustment can be carried out, after the size adjustment of the spiral extension tube 202 is finished, the pull plate 306 is pulled outwards, the locking table 307 is moved out of the slotted hole on the fixing plate 308, the fixing plate 308 slides on the positioning plate 310 in the opposite direction to the locking table 307 under the tensile force of the tension spring 309, the length limiting block 302 extrudes the fastening layer 203 under the elastic force of the tension spring 303, and the fastening layer 203 is fixed between the guide tube 301 and the length limiting block 302 under the friction force of the length limiting block 302, so that the length of the spiral extension tube 202 extending out of the box body 1 is fixed. The utility model with the structure can adjust the size of the spiral extension tube 202 without pushing the pulling plate 306 outwards all the time when the size of the spiral extension tube 202 extending out of the box body 1 is adjusted, has simple structure and reduces the operation steps when the size of the spiral extension tube 202 extending out of the box body 1 is adjusted.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. Various components mentioned in the present utility model are common in the art, and it should be understood by those skilled in the art that the present utility model is not limited by the above embodiments, and the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications can be made in the present utility model without departing from the spirit and scope of the utility model, which is defined in the claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a spiral pressure extension pipe, includes PVC pipe (2), PVC pipe (2) central part has spiral extension pipe (202) of spiral shape, spiral extension pipe (202) both ends are provided with body link (201), are provided with on spiral extension pipe (202) outside with its confined box body (1), box body (1) both sides surface is provided with the derivation hole that supplies body link (201) to wear out, is provided with on deriving hole in box body (1) and limits the length limiting part (3) that spiral extension pipe (202) stretched out box body (1) length, a serial communication port, shows length limiting part (3) including stand pipe (301) and length limiting block (302), and stand pipe (301) are fixed to be set up on the derivation hole in box body (1), and PVC pipe (2) are gone up both ends body link (201) and are outwards stretched out through stand pipe (301), are provided with spacing hole on a lateral wall, and this spacing downthehole activity is provided with and compresses tightly length limiting block (302) that box body (1) stretched out spiral extension pipe (202) length.

2. The spiral pressure extension tube according to claim 1, wherein the box body (1) is composed of an upper shell (101) and a lower shell (102) hinged with one side of the upper shell (101), an elastic locking block (103) is arranged on the end face of the other side of the upper shell (101), and a clamping groove (104) capable of enabling the elastic locking block (103) to be clamped in is formed in the position, opposite to the elastic locking block (103) at the end portion of the upper shell (101), of the lower shell (102).

3. A screw-type pressure extension tube according to claim 1 or 2, wherein the screw-type pressure extension tube (202) is provided with fastening layers (203) having hardness higher than that of the screw-type extension tube (202) at the upper portions thereof, the surface of the fastening layers (203) is provided with friction layers, and the fastening layers (203) are pressed and fixed by the length limiting blocks (302), so that the length of the screw-type extension tube (202) extending out of the box body (1) is fixed.

4. A spiral pressure extension tube according to claim 3, wherein the surface of the length limiting block (302) contacting the fastening layer (203) has an arc-shaped structure having the same curvature as the fastening layer (203).

5. The spiral pressure extension tube according to claim 4, wherein the structure of the length limiting member (3) further comprises a positioning plate (310), the positioning plate (310) is arranged on the outer surface of the fixed guide tube (301) in the box body (1), a pull rod (305) is arranged on the outer surface of one side of the length limiting member (302) far away from the guide tube (301), a through hole for the pull rod (305) to pass through is arranged on the positioning plate (310), a through hole on one side end surface of the pull rod (305) far away from the length limiting member (302) passes through the positioning plate (310), a pull plate (306) is arranged at the end of the pull rod, a spring limiting sleeve (304) for the pull rod (305) to pass through is arranged on the surface of one side of the positioning plate (310) near the length limiting member (302), the diameter of the inner part of the spring limiting sleeve (304) is larger than the diameter of the through hole on the positioning plate (310), an elastic member for the pull rod (305) to pass through is arranged between the spring limiting sleeve (304) and the through hole on the positioning plate (310), one end of the elastic member and the positioning plate (310) are fixedly arranged, the other end of the elastic member and the positioning plate (310) passes through the through hole, the pull rod (305) and the other end surface is fixedly arranged, and the length limiting member (302) is tightly pressed by the elastic member and is fixed on the outer surface, and the elastic member is fixedly arranged on the outer surface.

6. The helical compression extension of claim 5, wherein the elastic member disposed between the spring retainer (304) and the through hole in the positioning plate (310) is a thrust spring (303).

7. The spiral pressure extension tube of claim 6, wherein a locking table (307) is further arranged on one side end surface of the pull rod (305) far away from the length limiting block (302), a fixing plate (308) is slidably arranged on the outer surface of one side of the positioning plate (310) far away from the length limiting block (302), a protrusion is arranged on the locking table (307), a slot hole which is clamped with the protrusion on the locking table (307) is formed in the fixing plate (308), a tension spring (309) is arranged between the fixing plate (308) and the outer wall of the box body (1), and the fixing plate (308) is tensioned towards the bottom of the positioning plate (310) under the action of the elasticity of the tension spring (309), so that the fixing plate (308) is far away from the locking table (307).

8. The spiral pressure extension tube according to claim 1, wherein the inner cone locking joint (4) and the connecting joint (5) for connecting other components are respectively arranged on the tube connecting ends (201) at two ends of the PVC tube (2), the other connecting end of the connecting joint (5) is connected with a rotary outer cone locking joint (7), and an O-shaped sealing ring (6) for preventing liquid leakage in the PVC tube (2) is arranged inside the rotary outer cone locking joint (7).