CN117547670A - Venous drainage tube flow regulating device - Google Patents

Abstract

The invention provides a venous drainage tube flow regulating device which comprises a fixing device, a universal arm assembly and a flow control assembly, wherein the flow control assembly comprises a regulating control screw rod, a first regulating control flow claw and a second regulating control flow claw which are oppositely arranged, a first thread section and a second thread section which are opposite are arranged on the regulating control screw rod, the first regulating control flow claw and the second regulating control flow claw are respectively in threaded fit with the first thread section and the second thread section, and a venous drainage tube is clamped between the first regulating control flow claw and the second regulating control flow claw. According to the invention, the first adjusting control flow claw and the second adjusting control flow claw are arranged on the adjusting control screw rod with opposite threads, so that stepless adjustment can be realized for the flexible drainage tube, and the instantaneous change of the hemostatic forceps on vascular pressure caused by sudden opening and closing is reduced, thereby reducing the operation risk.

Description

Venous drainage tube flow regulating device

Technical Field

The invention relates to the technical field of medical equipment, in particular to a venous drainage tube flow regulating device, and especially relates to a venous drainage tube flow regulating device for extracorporeal circulation.

Background

The extracorporeal circulation is life support technology for draining the blood of the heart-returning vein to the outside of the body by using a series of special artificial devices, and outputting the blood back to an arterial system in the body after gas exchange, temperature regulation and filtration by an artificial method. The venous drainage tube needs to be gradually clamped to be opened in the early stage of extracorporeal circulation diversion, and the venous drainage tube needs to be gradually clamped to be fully opened in the near-end of extracorporeal circulation, and the two processes are one of key technologies of extracorporeal circulation.

At present, most units use a tube clamp or a hemostatic clamp for vein control when in extracorporeal circulation diversion, and the clamping angle of the tube clamp or the hemostatic clamp is manually adjusted so as to adjust the flow of the drainage tube, but the reference standard is lacking in the process of adjusting the clamping angle of the tube clamp or the hemostatic clamp, the operation personnel is seriously depended on the experience of the operation personnel, a great deal of effort of the operation personnel is required to carefully observe the flow of the venous drainage tube, and the clamping angle of the tube clamp is not well controlled, so that the operation risk is easily caused.

In addition, in the existing extracorporeal circulation operation, the flow regulation of the venous drainage tube has the technical problem of lower accuracy. Most use the multistage profile of tooth of hemostat to control flow size, the multistage profile of tooth of current hemostat only has several sections control, can not reach the fine control, can cause obvious discomfort when the hemostat suddenly opens and closes, causes suddenly pressurization, pressure release to the blood vessel simultaneously to increase the operation risk.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a flow regulating device of a venous drainage tube.

The venous drainage tube flow regulating device comprises a fixing device, a universal arm assembly and a flow control assembly, wherein the fixing device and the flow control assembly are respectively arranged at two ends of the universal arm assembly, and the fixing device is used for clamping an external fixing device; the flow control assembly comprises an adjusting control screw rod, a first adjusting control flow claw and a second adjusting control flow claw which are oppositely arranged, wherein the first adjusting control flow claw is in threaded fit connection with the adjusting control screw rod, and the second adjusting control flow claw is in threaded fit connection with the adjusting control screw rod; the venous drainage tube is clamped between the first regulating control flow claw and the second regulating control flow claw.

Preferably, the flow control assembly further comprises an adjusting control handle, one end of the adjusting control screw rod is connected with the adjusting control handle, and the other end of the adjusting control screw rod sequentially penetrates through the second adjusting control flow claw and the first adjusting control flow claw.

Preferably, the flow control assembly further comprises a base, and the adjusting control screw rod is slidably arranged on the base.

Preferably, on the projection along the radial direction of the venous drainage tube, the outer ends of the clamping surfaces of the first regulating and controlling flow claw and the second regulating and controlling flow claw are respectively provided with a convex hook.

Preferably, the fixing device comprises a fixing clamp, the fixing clamp comprises a locking screw rod, a lower jaw and an upper jaw, the lower jaw and the upper jaw are respectively connected with the locking screw rod in a threaded fit manner, the lower jaw and the upper jaw are used for clamping external fixing appliances, and the locking screw rod is used for adjusting the clamping degree of the lower jaw and the upper jaw through rotation of the locking screw rod.

Preferably, the fixing clamp further comprises a first locking rotating shaft, a second locking rotating shaft and a locking handle; one end of the locking screw rod is connected with the locking handle, the other end of the locking screw rod sequentially penetrates through the second locking rotating shaft and the first locking rotating shaft in the radial direction, the second locking rotating shaft is rotatably arranged in the upper jaw, the first locking rotating shaft is rotatably arranged in the lower jaw, and the upper jaw and the end part of the lower jaw are rotatably connected; the locking screw rod is sequentially provided with a third thread section and a fourth thread section with opposite thread directions, the second locking rotating shaft is in threaded fit connection with the third thread section, and the first locking rotating shaft is in threaded fit connection with the fourth thread section.

Preferably, the upper jaw comprises a first clamping part positioned on the lower surface of the upper jaw, the lower jaw comprises a second clamping part positioned on the upper surface of the lower jaw, the first clamping part and the second clamping part are of V-shaped groove structures, and the V-shaped grooves of the first clamping part and the V-shaped grooves of the second clamping part are oppositely arranged.

Preferably, the universal arm assembly comprises a plurality of connecting arms and a locking structure, and the connecting arms are connected in sequence at first positions through the locking structure; of the plurality of connection arms, the end of the connection arm at the head end is provided with the fixing device, and the end of the connection arm at the tail end is provided with the flow control assembly 3.

Preferably, the universal arm assembly further comprises a flow control assembly joint, a fixing clamp joint and a universal ball, wherein the flow control assembly is arranged at one end of the flow control assembly joint, and the fixing clamp is arranged at one end of the fixing clamp joint; a mandrel is arranged inside the connecting arm; the other end of the flow control assembly joint and the other end of the fixing clamp joint are respectively connected with the end part of the connecting arm through the universal ball, and the mandrel can prop against the bottom of the universal ball when extending out so as to fix the flow control assembly joint and the fixing clamp joint.

Preferably, on the projection of a plane passing through the axial direction of the venous drainage tube, the first regulating control flow claw and the second regulating control flow claw are arranged in a staggered mode.

Compared with the prior art, the invention has the following beneficial effects:

the invention has simple structure and convenient operation, and can realize stepless adjustment of the flow of the flexible venous drainage tube by adopting the technical means that the first adjusting and controlling flow claw and the second adjusting and controlling flow claw are arranged on the adjusting and controlling screw rod with opposite threads, thereby reducing the instantaneous change of the pressure of the blood vessel caused by sudden opening and closing of the hemostatic forceps and further reducing the risk of operation.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of a front view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic front view of a fixing clip according to the present invention;

FIG. 4 is a schematic perspective view of a fixing clip according to the present invention;

FIG. 5 is a schematic view of the bottom structure of the fixing clip of the present invention;

FIG. 6 is a schematic side view of a clip according to the present invention;

FIG. 7 is a schematic view of the overall structure of the gimbal assembly of the present invention;

FIG. 8 is a schematic diagram of a front view of a flow control assembly according to the present invention;

FIG. 9 is a schematic top view of a flow control assembly according to the present invention.

The figure shows:

first connecting arm 2-2 of fixing clip 1

The first locking rotating shaft 1-1 is locked with the structure 2-3

Lower jaw 1-2 second connecting arm 2-4

The upper jaw 1-3 is fixed with the clamp joint 2-5

Second locking rotating shaft 1-4 flow control assembly 3

First adjusting and controlling flow claw 3-1 for locking screw rod 1-5

Locking handle 1-6 second regulating and controlling flow claw 3-2

Universal arm assembly 2 adjusting control screw rod 3-3

Flow control assembly joint 2-1 adjusts control handle 3-4

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.

1-2, the venous drainage tube flow regulating device comprises a fixing device, a universal arm assembly 2 and a flow control assembly 3, wherein the fixing device comprises a fixing clamp 1, the fixing clamp 1 and the flow control assembly 3 are respectively arranged at two ends of the universal arm assembly 2, and the fixing clamp 1 is used for clamping an external fixing device; the fixation clamp 1 is used for clamping an external fixation device, and the venous drainage tube is clamped in the flow control assembly 3.

As shown in fig. 8, the flow control assembly 3 includes an adjustment control screw rod 3-3, a first adjustment control flow claw 3-1 and a second adjustment control flow claw 3-2, which are disposed opposite to each other, the first adjustment control flow claw 3-1 is in threaded fit connection with the adjustment control screw rod 3-3, and the second adjustment control flow claw 3-2 is in threaded fit connection with the adjustment control screw rod 3-3.

The adjusting control screw rod 3-3 is sequentially provided with a first thread section and a second thread section with opposite thread directions, the first adjusting control flow claw 3-1 is in threaded connection with the first thread section, the second adjusting control flow claw 3-2 is in threaded connection with the second thread section, and the venous drainage tube is clamped between the first adjusting control flow claw 3-1 and the second adjusting control flow claw 3-2. By arranging the two opposite regulating and controlling flow claws on the regulating and controlling screw rod with opposite threads, stepless regulation can be realized for the flexible venous drainage tube, the instantaneous change of vascular pressure caused by sudden opening and closing of the hemostatic forceps is reduced, and good and safe operation is provided, so that the operation risk is reduced.

As shown in fig. 8 to 9, the flow control assembly 3 further comprises a base and an adjusting control handle 3-4, wherein the adjusting control screw 3-3 is slidably arranged on the base, and the base is mounted at the end part of the universal arm assembly 2; one end of the adjusting control screw rod 3-3 is connected with the adjusting control handle 3-4, and the other end of the adjusting control screw rod 3-3 sequentially penetrates through the second adjusting control flow claw 3-2 and the first adjusting control flow claw 3-1; preferably, two protruding structures are arranged on two sides of the upper surface of the base, and are used for achieving radial limiting of the adjusting control screw rod 3-3.

The self-locking performance of the screw thread can realize the locking of any position of the clamping jaw opening, and stepless adjustment is ensured. The first adjusting control flow claw 3-1, the second adjusting control flow claw 3-2 and the base are matched, so that stable parallel locking and opening of the adjusting control flow claw can be ensured.

In a preferred embodiment of the invention, in order to ensure that the opening value of one circle of rotation of the adjusting control screw rod 3-3 is controllable, relative scales can be marked on the base to be used as references for flow requirements, and the opening and closing of the first adjusting control flow claw 3-1 and the second adjusting control flow claw 3-2 can be intuitively known when the adjusting control screw rod 3-3 rotates left and right, so that hidden surgical troubles of iatrogenic caused by sudden opening and closing of the inner space of the drainage tube can not occur.

In a preferred embodiment of the present invention, as shown in fig. 8, the adjustment control screw 3-3 is connected with the through hole of the adjustment control handle 3-4, where the adjustment control handle 3-4 can slide relatively in the inner hole of the adjustment control screw 3-3 and is limited by spherical structures at two ends, so that the relative movement of the adjustment control handle 3-4 and the adjustment control screw 3-3 is ensured, and the smooth progress of the whole flow control is ensured under the condition of narrow space or interference caused by circumferential rotation.

As shown in fig. 8, on the projection along the radial direction of the venous drainage tube, the upper end of the clamping surface of the first adjusting and controlling flow claw 3-1 and the outer end of the clamping surface of the second adjusting and controlling flow claw 3-2 are respectively provided with a convex hook, so that the venous drainage tube can be prevented from falling off under the condition that the venous drainage tube is not pre-contracted in the preparation process in the operation, and the operation is ensured. As shown in fig. 9, on the projection in the top view, that is, on the projection of a plane passing through the axial direction of the venous drainage tube, the 1 toothed blocks of the second regulating and controlling flow claw 3-2 are located between the 2 toothed blocks of the first regulating and controlling flow claw 3-1, and the first regulating and controlling flow claw 3-1 and the second regulating and controlling flow claw 3-2 are arranged in a staggered manner, so that the 1 toothed blocks of the second regulating and controlling flow claw 3-2 can extend into the gaps between the 2 toothed blocks of the first regulating and controlling flow claw 3-1. In view of the flexible and resilient nature of the venous drainage tube, the staggered form of the first 3-1 and second 3-2 regulated control flow jaws ensures that the flexible drainage tube is fully closed or fully opened when clamped.

As shown in fig. 3 to 6, the fixing device comprises a fixing clamp 1, the fixing clamp 1 comprises a locking screw rod 1-5, a lower jaw 1-2 and an upper jaw 1-3, the lower jaw 1-2 and the upper jaw 1-3 are respectively connected with the locking screw rod 1-5 in a threaded fit manner, the lower jaw 1-2 and the upper jaw 1-3 are used for clamping an external fixing tool, and the locking screw rod 1-5 is used for adjusting the clamping degree of the lower jaw 1-2 and the upper jaw 1-3 through self rotation.

The fixed clamp 1 further comprises a first locking rotating shaft 1-1, a second locking rotating shaft 1-4 and a locking handle 1-6; one end of the locking screw rod 1-5 is connected with the locking handle 1-6, the other end of the locking screw rod 1-5 sequentially penetrates through the second locking rotating shaft 1-4 and the first locking rotating shaft 1-1 in the radial direction, the second locking rotating shaft 1-4 is rotatably arranged in the upper jaw 1-3, the first locking rotating shaft 1-1 is rotatably arranged in the lower jaw 1-2, and the upper jaw 1-3 is rotatably connected with the end part of the lower jaw 1-2; the locking screw rod 1-5 is sequentially provided with a third thread section and a fourth thread section with opposite thread directions, the second locking rotating shaft 1-4 is in threaded fit connection with the third thread section, and the first locking rotating shaft 1-1 is in threaded fit connection with the fourth thread section. The first locking rotating shaft 1-1 and the second locking rotating shaft 1-4 can lead the locking screw rod 1-5 to be influenced only by axial pressing force and not by irregular force of other direction cutting and grinding according to the diameter of the locking fixing device and the centering of the constant holding force of the locking screw rod 1-5, so that the locking stability of the device is ensured. When two sections of threads of the locking screw rod 1-5 are matched with the first locking rotating shaft 1-1 and the second locking rotating shaft 1-4 in the locking process, the locking handle 1-6 can be rotated unidirectionally to ensure that the lower jaw 1-2 and the upper jaw 1-3 are opened and closed relatively, the relative efficiency is improved by more than one time, and the time and the efficiency are saved.

The upper jaw 1-3 and the lower jaw 1-2 are used for clamping a stable fixed device in an operating room, can provide enough force for an external circulation venous drainage tube flow regulating device to ensure that the device does not shake, reduce the random swinging condition of equipment after manual clamping, and prevent the hidden danger of loosening and falling caused by manual walking and collision of the equipment.

Preferably, as shown in fig. 3, the upper jaw 1-3 includes a first clamping portion located on a lower surface thereof, the lower jaw 1-2 includes a second clamping portion located on an upper surface thereof, the first clamping portion and the second clamping portion are both in a V-shaped groove structure, and the V-shaped groove of the first clamping portion is opposite to the V-shaped groove of the second clamping portion. The clamping tube shape, square shape and opposite shape can be satisfied by adopting the V-shaped groove, and the wildness of the application occasion is ensured.

As shown in fig. 7, the universal arm assembly 2 includes a plurality of connecting arms and locking structures 2-3, where the plurality of connecting arms are connected in sequence by the locking structures 2-3; of the plurality of connection arms, the end part of the connection arm positioned at the head end is provided with the fixing clamp 1, and the end part of the connection arm positioned at the tail end is provided with the flow control assembly 3. The locking structure 2-3 is a locking structure in a magic arm structure in the prior art, and the principle is not described herein.

In a preferred embodiment of the present invention, the number of the connecting arms is two, namely a first connecting arm 2-2 and a second connecting arm 2-4, one end of the first connecting arm 2-2 is provided with a flow control component 3, the other end of the first connecting arm 2-2 is connected with one end of the second connecting arm 2-4 through a locking structure 2-3, and the other end of the second connecting arm 2-4 is provided with a fixing clip 1. When the knob of the locking structure 2-3 is released, the included angle between the first connecting arm 2-2 and the second connecting arm 2-4 can be adjusted at will.

The universal arm assembly 2 further comprises a flow control assembly joint 2-1, a fixing clamp joint 2-5 and a universal ball, the flow control assembly 3 is arranged at one end of the flow control assembly joint 2-1, and the fixing clamp 1 is arranged at one end of the fixing clamp joint 2-5; the other end of the flow control assembly joint 2-1 and the other end of the fixing clamp joint 2-5 are connected with the end part of the connecting arm through universal balls, the universal balls are positioned in supporting seats at the end parts of the connecting arm and cannot deviate, and when a knob of the locking structure 2-3 is loosened, 2 flow control assembly joints 2-1 and the fixing clamp joints 2-5 corresponding to the universal balls can rotate around mandrels of the connecting arm at different angles. When the knob of the locking structure 2-3 is locked, the inner mandrel of the connecting arm can prop against the bottom of the universal ball when extending out, so as to fix the flow control assembly joint 2-1 and the fixing clamp joint 2-5. The double universal matching mode can realize relative fixation at any time and lock any position in space when the mandrel in the first connecting arm 2-2 and the second connecting arm 2-4 are forced and ejected. The locking structure 2-3 is in the form of a knob and is the only locking part at the position, and the relative fixation of the first connecting arm 2-2, the second connecting arm 2-4, the fixed flow control assembly joint 2-1 and the fixed clamp joint 2-5 can be met by only locking the locking structure 2-3, so that the locking structure is simple, stable and efficient. The universal arm assembly 2 can ensure that the device can be stably locked at any position and any angle, provides a stable space positioning function, and ensures that the device is comfortable and easy to use.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.

The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.

Claims (10)

1. The venous drainage tube flow regulating device is characterized by comprising a fixing device, a universal arm assembly (2) and a flow control assembly (3), wherein the fixing device and the flow control assembly (3) are respectively arranged at two ends of the universal arm assembly (2), and the fixing device is used for clamping an external fixing appliance;

the flow control assembly (3) comprises an adjusting control screw rod (3-3) and a first adjusting control flow claw (3-1) and a second adjusting control flow claw (3-2) which are oppositely arranged, wherein the first adjusting control flow claw (3-1) is in threaded fit connection with the adjusting control screw rod (3-3), and the second adjusting control flow claw (3-2) is in threaded fit connection with the adjusting control screw rod (3-3);

the venous drainage tube is characterized in that a first thread section and a second thread section with opposite thread directions are sequentially arranged on the adjusting control screw rod (3-3), the first adjusting control flow claw (3-1) is in threaded connection with the first thread section, the second adjusting control flow claw (3-2) is in threaded connection with the second thread section, and the venous drainage tube is clamped between the first adjusting control flow claw (3-1) and the second adjusting control flow claw (3-2).

2. The venous drainage tube flow regulating device according to claim 1, characterized in that the flow control assembly (3) further comprises an adjusting control handle (3-4), one end of the adjusting control screw (3-3) is connected with the adjusting control handle (3-4), and the other end of the adjusting control screw (3-3) sequentially penetrates through the second adjusting control flow claw (3-2) and the first adjusting control flow claw (3-1).

3. The intravenous drainage tube flow regulating device according to claim 2, wherein the flow control assembly (3) further comprises a base on which the regulating control screw (3-3) is slidingly arranged.

4. The venous drainage tube flow regulating device of claim 1, wherein on a projection in a radial direction of the venous drainage tube, the outer ends of the clamping surfaces of the first regulating control flow claw and the second regulating control flow claw are both provided with raised hooks.

5. The venous drainage tube flow regulating device according to claim 1, characterized in that the fixing device comprises a fixing clamp (1), the fixing clamp (1) comprises a locking screw (1-5), a lower jaw (1-2) and an upper jaw (1-3), the lower jaw (1-2) and the upper jaw (1-3) are respectively connected with the locking screw (1-5) in a threaded fit manner, the lower jaw (1-2) and the upper jaw (1-3) are used for clamping an external fixing tool, and the locking screw (1-5) is used for regulating the clamping degree of the lower jaw (1-2) and the upper jaw (1-3) through self rotation.

6. The intravenous drainage tube flow regulating device according to claim 5, wherein the fixation clamp (1) further comprises a first locking spindle (1-1), a second locking spindle (1-4) and a locking handle (1-6);

one end of the locking screw rod (1-5) is connected with the locking handle (1-6), the other end of the locking screw rod (1-5) sequentially penetrates through the second locking rotating shaft (1-4) and the first locking rotating shaft (1-1) in the radial direction, the second locking rotating shaft (1-4) is rotatably arranged in the upper jaw (1-3), the first locking rotating shaft (1-1) is rotatably arranged in the lower jaw (1-2), and the upper jaw (1-3) is rotatably connected with the end part of the lower jaw (1-2);

the locking screw rod (1-5) is sequentially provided with a third thread section and a fourth thread section with opposite thread directions, the second locking rotating shaft (1-4) is in threaded fit connection with the third thread section, and the first locking rotating shaft (1-1) is in threaded fit connection with the fourth thread section.

7. The intravenous drainage tube flow regulating device according to claim 6, wherein the upper jaw (1-3) comprises a first clamping part on the lower surface thereof, the lower jaw (1-2) comprises a second clamping part on the upper surface thereof, the first clamping part and the second clamping part are of a V-shaped groove structure, and the V-shaped groove of the first clamping part is opposite to the V-shaped groove of the second clamping part.

8. The venous drainage tube flow regulating device according to claim 1, wherein the universal arm assembly (2) comprises a plurality of connecting arms and a locking structure (2-3), and the plurality of connecting arms are sequentially connected through the locking structure (2-3) at the beginning;

and among the plurality of connecting arms, the end part of the connecting arm positioned at the head end is provided with the fixing device, and the end part of the connecting arm positioned at the tail end is provided with the flow control assembly (3).

9. The intravenous drainage tube flow regulating device according to claim 5, wherein the universal arm assembly (2) further comprises a flow control assembly joint (2-1), a fixation clamp joint (2-5) and a universal ball, the flow control assembly (3) is arranged at one end of the flow control assembly joint (2-1), and the fixation clamp (1) is arranged at one end of the fixation clamp joint (2-5);

a mandrel is arranged inside the connecting arm;

the other end of the flow control assembly joint (2-1) and the other end of the fixing clamp joint (2-5) are respectively connected with the end part of the connecting arm through 2 universal balls, and the mandrel can prop against the bottom of the universal balls when extending out so as to fix the flow control assembly joint (2-1) and the fixing clamp joint (2-5).

10. The venous drainage tube flow regulation device according to claim 1, characterized in that the first regulation control flow claw (3-1) and the second regulation control flow claw (3-2) are arranged in a staggered manner on a projection of a plane passing through the axial direction of the venous drainage tube.