CN111658954B

CN111658954B - Medical intubation tube for enhancing drainage effect

Info

Publication number: CN111658954B
Application number: CN202010602635.4A
Authority: CN
Inventors: 刘志军; 魏信鑫; 马奔; 袁栋平
Original assignee: Dongguan Kewei Medical Instrument Co Ltd
Current assignee: Dongguan Kewei Medical Instrument Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2022-09-23
Anticipated expiration: 2040-06-29
Also published as: CN111658954A

Abstract

The invention discloses a medical cannula for enhancing drainage effect, which comprises: the drainage tube comprises a tube body, a support body and drainage holes, wherein the support body is arranged in the tube body; the drainage hole penetrates through the tube body; the support body comprises at least two elastic pieces which are mutually embedded, each elastic piece is provided with at least one deformation section, and the drainage hole is positioned in the deformation section. Through the cooperation setting in body, supporter and drainage hole, two at least elastic components provide the support for whole body, increase the body rigidity, and the section of deformation on the elastic component concentrates and provides the support for the drainage hole, and two at least elastic component gomphosis form symmetrical structure simultaneously, can make things convenient for offering of drainage hole, has still reduced the peripheral blank section in drainage hole simultaneously, effectively prevents around the drainage hole body in the use phenomenon of collapsing.

Description

Medical intubation tube for enhancing drainage effect

Technical Field

The invention relates to the technical field of medical instruments, in particular to a medical intubation tube for enhancing the drainage effect.

Background

Medical intubate (including artery intubate, vein intubate, femoral artery intubate and femoral vein intubate etc.) often uses in various needs extracorporeal circulation operations, and traditional intubate is main including the pipe box and set up the spring in the pipe box at present, and in addition, in order to increase drainage effect, the intubate is generally realized through seting up side direction drainage hole (or drainage groove).

Conventional cannulas with lateral drainage holes (or drainage grooves) such as double-stage venous cannulas, femoral venous cannulas and the like are additionally provided with drainage structures, and if an additional transition joint is adopted, the drainage structures need to be bonded through glue, so that the biocompatibility problem of the glue and the risk of joint falling are caused; if a spring part which is independent from the main body spring is adopted, the bending performance of the transition section is different from that of the main body, so that the integral bending performance is poor; if the intubation tube main body with the reinforcing part being a single spiral winding spring is directly holed (or grooved), the tube section has high difficulty in holing (or grooving) and is easy to cause great reduction in rigidity, and the collapse phenomenon occurs in the drainage process to cause the blockage of a pipeline, so that the drainage effect is greatly influenced, as shown in fig. 1, the fig. 1 is a partial enlarged view of the prior art; the drainage hole is in the range of a section of screw pitch L, the positions of A, B, C openings exist, and if the opening is formed at the position A, the problem of pipe sleeve collapse is easy to occur because no support is arranged at the position B, C; the case of opening at C is the same as that at A; when holes are formed near the position B, the opposite springs are easily broken, and blank sections exist on the left side and the right side of the position B, so that the problem of pipe sleeve collapse is easily caused. Thus, regardless of where the hole is opened A, B, C, the circumferential direction is such that only a single spring is wound, the more the hole is, the greater the stiffness of the body is reduced. How to keep the integral spring winding consistent characteristic of the cannula without weakening the rigidity of the main body and the drainage effect of the cannula becomes a problem to be solved urgently.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a medical cannula for enhancing the drainage effect.

The invention discloses a medical intubation tube for enhancing drainage effect, which comprises: the drainage tube comprises a tube body, a support body and drainage holes, wherein the support body is arranged in the tube body; the drainage hole penetrates through the tube body; the supporting body comprises at least two elastic pieces which are mutually embedded, each elastic piece comprises at least one deformation section and a non-deformation section, and the drainage hole is positioned in the deformation section.

According to an embodiment of the invention, the elastic member is a spring.

According to an embodiment of the invention, the cross-section of the resilient member is circular or rectangular.

According to an embodiment of the invention, the pitch of the elastic element in the deformation section is larger than in the non-deformation section.

According to an embodiment of the present invention, the tube body includes an inner tube and an outer tube, the outer tube is sleeved on the inner tube, the elastic member is disposed between the inner tube and the outer tube, and the drainage hole penetrates through the inner tube and the outer tube.

According to an embodiment of the present invention, the inner tube includes a tube head, a tube body and a tube handle, wherein a proximal end of the tube head is connected to a distal end of the tube body, a distal end of the tube handle is connected to a proximal end of the tube body, and the elastic member is sleeved on the tube body and the tube handle.

According to one embodiment of the invention, the included angle between the pipe head and the pipe body is an obtuse angle or a straight angle; the included angle between the tube body and the tube handle is an obtuse angle or a straight angle.

According to one embodiment of the invention, the number of the drainage holes is multiple, and the plurality of drainage holes are arranged around the circumferential surface of the tube body.

According to one embodiment of the present invention, the plurality of drainage holes are symmetrically arranged along the circumferential surface of the tube body.

According to an embodiment of the invention, the support body further comprises a support member, the support member being connected to the at least one elastic member.

The medical intubation tube has the advantages that the medical intubation tube integrally keeps integrity (such as the winding characteristic of a spiral spring), so that the integral performance cannot be changed sharply in a certain section; through the body, the cooperation setting in supporter and drainage hole, two at least elastic components provide the support for whole body, increase the body rigidity, the section of deformation on the elastic component concentrates on providing the support for the drainage hole, two at least elastic component gomphosis form symmetrical structure simultaneously, can make things convenient for offering in drainage hole, the peripheral blank section in drainage hole has still been reduced, can open in the same circumference and establish the rigidity that a plurality of drainage holes still can guarantee this pipeline section, greatly increased drainage effect, and can effectively prevent that the body around the drainage hole from taking place the phenomenon of collapsing in the use.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is an enlarged view of a portion of the prior art;

FIG. 2 is a perspective view of a medical cannula for enhancing drainage effect in an embodiment;

FIG. 3 is another perspective view of the medical cannula for enhancing drainage effect in the embodiment

FIG. 4 is a perspective view of the tube body in the embodiment;

fig. 5 is a schematic perspective view of the support in the example.

Description of the reference numerals

1-a pipe body; 11-an inner tube; 111-a cartridge; 112-a tube body; 113-a tube handle; 12-an outer tube; 2-a support; 21-an elastic member; 22-a support; 3-drainage holes; 4-deformation section.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details should not be taken to limit the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings for the sake of simplicity.

It should be noted that in the present invention, "proximal" and "distal" are relative orientations, relative positions, directions of elements or actions with respect to each other from the perspective of a physician using the medical device, although "proximal" and "distal" are not intended to be limiting, the term "proximal" generally refers to the end of the medical device that is closer to the physician during normal operation, and "distal" generally refers to the end that is first introduced into the patient.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 2-5, fig. 2 is a perspective structure view of a medical cannula for enhancing drainage effect in an embodiment; FIG. 3 is another perspective structure view of the medical cannula for enhancing drainage effect in the embodiment; FIG. 4 is a perspective view of the tube 1 in the embodiment; fig. 5 is a schematic perspective view of the support body 2 in the embodiment. The medical intubation tube for enhancing the drainage effect comprises a tube body 1, a support body 2 and drainage holes 3, wherein the support body 2 is arranged in the tube body 1, and the drainage holes 3 are arranged in the tube body 1 in a penetrating mode. The support body 2 comprises two elastic members 21, the two elastic members 21 are embedded with each other, as shown in the embodiment, the two elastic members 21 are embedded with each other to form a co-rotating double-spiral structure, and each elastic member 21 is provided with at least one deformation section 4, and the drainage hole 3 is located in the deformation section 4. The two elastic members 21 are not limited to a double-spiral structure in the same direction, and may be triple-spiral or multi-spiral, or may be in the same direction or different directions, and may be correspondingly disposed according to actual use requirements.

Wherein, body 1 is used for bearing two elastic component 21 and drainage hole 3, and two elastic component 21 are used for supporting body 1, and simultaneously, the section of deformation 4 on the elastic component 21 can be convenient for seting up of drainage hole 3 and prevent that body 1 around drainage hole 3 from collapsing.

Preferably, the tube body 1 includes an inner tube 11 and an outer tube 12, the outer tube 12 is sleeved outside the inner tube 11, the elastic member 21 is located between the inner tube 11 and the outer tube 12, and the drainage hole 3 penetrates through the inner tube 11 and the outer tube 12. In specific application, the inner tube 11 and the outer tube 12 have the same structure, and the inner tube 11 and the outer tube 12 only have size difference. Specifically, the inner tube 11 and the outer tube 12 are both made of TPU (thermoplastic polyurethane elastomer rubber), which improves the wear resistance, transparency and elasticity. The inner tube 11 includes a tube head 111, a tube body 112 and a tube handle 113, wherein the proximal end of the tube head 111 is connected to the distal end of the tube body 112, the distal end of the tube handle 113 is connected to the proximal end of the tube body 112, and the elastic member 21 is sleeved on the tube body 112 and the tube handle 113. During specific application, the included angle of the joint of the tube head 111 and the tube body 112 is an obtuse angle or a straight angle, and the included angle of the joint of the tube body 112 and the tube handle 113 is an obtuse angle or a straight angle, so that when the tube body 1 is inserted into a human body, transition among the tube head 111, the tube body 112 and the tube handle 113 is smoother, and damage to human tissues is prevented. When the tube body 112 is obtuse with the contained angle of tube handle 113, the external diameter of tube handle 113 is bigger than the external diameter of tube body 112 promptly, then elastic component 21 also reduces thereupon, that is to say, the external diameter of the elastic component 21 that is located tube handle 113 department is greater than the external diameter of the elastic component 21 that is located tube body 112 department for the laminating degree of elastic component 21 and whole body 1 is higher, improves the support effect that elastic component 21 provided for body 1.

Preferably, the elastic member 21 is a spring, and in particular, when the elastic member 21 is applied, the cross section of the elastic member 21 is circular or rectangular; when the cross-section of elastic component 21 is the rectangle, its whole volume is less, and whole thickness is less, and then makes elastic component 21 internal diameter grow, and this elastic component 21 combines back with pipe shaft 112 and pipe handle 113, has increased the internal diameter of body 1, has increased the passageway of blood circulation promptly for blood flows more smoothly, is difficult for blockking up. The deformation section 4 is formed by a change in the pitch of the elastic member 21, i.e. the pitch of the deformation section 4 is greater than the pitch of the non-deformation section. In specific application, it is assumed that the elastic member 21 is provided with a deformation section 4, that is, the thread pitch at two ends of the deformation section 4 is unchanged, for example, the thread pitch at one end of the deformation section 4 is 0.2mm, the thread pitch of the deformation section 4 is 1mm, and the thread pitch at the other end of the deformation section 4 is also 0.2 mm; because the two elastic parts 21 have the same structure, when the two elastic parts 21 are mutually embedded, the two elastic parts 21 are distributed in a symmetrical structure, so that the contact area between the two elastic parts and the inner pipe 11 and the outer pipe 12 is increased, and larger and more uniform supporting force is provided for the inner pipe 11 and the outer pipe 12; meanwhile, because the two elastic pieces 21 are embedded, the overlapping position of the screw pitch of one elastic piece 21 and the screw pitch of the other elastic piece 21 is formed, the screw pitch of any one elastic piece 21 is indirectly reduced, one of the effects is that the drainage hole 3 is convenient to be formed, the drainage hole 3 is formed in the overlapping position, and due to the symmetrical structure, the drainage hole 3 can be directly and symmetrically formed along the circumferential surface of the pipe body 1, namely, the pipe body can be penetrated from one side to the other side of the pipe body 1, the problem of interference of the elastic pieces 21 cannot exist, and the phenomenon of cutting off the elastic pieces 21 cannot exist; compared with the traditional method, the method has the advantages that the drainage holes 3 need to be rotated for a certain angle, the method is more convenient and faster, and the drainage hole 3 opening efficiency is improved. The second effect is that after the thread pitch of the elastic part 21 is reduced, the blank sections around the drainage hole 3 are reduced, so that the collapse phenomenon of the tube body 1 is not easy to occur in the using process, and the obstruction to the blood circulation is prevented. The third effect is that after the screw pitch is reduced, the pipe body 1 is not easy to bend in the using process, and the bending performance of the pipe body 1 is improved. In this embodiment, drainage hole 3 encircles body 1 and sets up, is provided with a plurality of drainage holes 3 on body 1 same circumference promptly, because the supporting role of two elastic component 21, even set up a plurality of drainage holes 3 around body 1, can not weaken body 1's rigidity yet, the phenomenon that body 1 around drainage hole 1 takes place to collapse also can not appear simultaneously.

During the specific application, can set up many places deformation segment 4 on same body 1, and can set up the area size of deformation segment 4 as required. Specifically, the far end of the tube body 1 away from the doctor is the part which is firstly inserted into the human body, and the flowing blood volume is larger, so the area of the deformation section 4 is larger, and the number of the drainage holes 3 is larger; from the far end to the near end of body 1, the reduction of deformation section 4, the corresponding drainage hole 3 quantity also reduces. It should be noted that the thread pitches of the elastic members 2 in each deformation section 4 may be the same or different, and the user performs corresponding setting according to actual use requirements.

It is further preferred that the supporting body 2 further comprises a supporting member 22, and preferably, the supporting member 22 is connected with at least one of the elastic members 21. When the utility model is used specifically, the support piece 22 is located the distal end of body 1, because body 1 is the biggest when entering the human body initially, the pressure that receives, so support piece 22 provides bigger holding power for the distal end of body 1, prevents that body 1 from being extruded and warp.

The medical intubation tube with the reinforced drainage effect is assembled by firstly embedding the two elastic pieces 21, then sleeving the inner tube 11, simultaneously sleeving the supporting piece 22, then adding the outer tube 12 outside the inner tube 11, and carrying out hot melting on the inner tube 11 and the outer tube 12, so that the tube body 1 is tightly connected with the support body 2, and finally, the drainage hole 3 is formed in the deformation section 4.

In conclusion, the medical cannula keeps the spiral winding characteristic of the integrated spring, a sharply changed pipe section cannot exist, and the overall use performance is better. Through the body, the cooperation setting in supporter and drainage hole, two at least elastic components provide the support for whole body, the last deformation section of elastic component concentrates on providing the support for the drainage hole, two at least elastic component gomphosis form symmetrical structure simultaneously, can make things convenient for seting up of drainage hole, the peripheral blank section in drainage hole has still been dwindled simultaneously, can open in the same circumference and establish the rigidity that a plurality of drainage holes still can guarantee this pipeline section, greatly increased drainage effect, and can effectively prevent that the body from taking place the phenomenon of collapsing in the use around the drainage hole.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A medical cannula for enhancing drainage effect, which is characterized by comprising: the drainage tube comprises a tube body, a support body and drainage holes, wherein the support body is arranged in the tube body; the drainage hole penetrates through the tube body; the support body comprises at least two elastic pieces which are mutually embedded, each elastic piece comprises at least one deformation section and a non-deformation section, and the drainage hole is positioned in the deformation section;

the thread pitch of the elastic piece in the deformation section is larger than that of the non-deformation section;

due to the fact that the two elastic pieces are arranged in a jogged mode, the thread pitch of one elastic piece is overlapped with that of the other elastic piece.

2. The medical cannula for enhancing drainage according to claim 1, wherein the elastic member is a spring.

3. The medical cannula for enhancing drainage according to claim 2, wherein the cross-section of the elastic member is circular or rectangular.

4. The medical cannula for enhancing drainage effect as claimed in claim 1, wherein the tube body comprises an inner tube and an outer tube, the inner tube is sleeved with the outer tube, the elastic member is disposed between the inner tube and the outer tube, and the drainage hole penetrates through the inner tube and the outer tube.

5. The medical cannula with the enhanced drainage effect as recited in claim 4, wherein the inner tube comprises a tube head, a tube body and a tube handle, the proximal end of the tube head is connected with the distal end of the tube body, the distal end of the tube handle is connected with the proximal end of the tube body, and the elastic member is sleeved on the tube body and the tube handle.

6. The medical cannula for enhancing drainage effect as claimed in claim 5, wherein the included angle between the tube head and the tube body is an obtuse angle or a straight angle; the pipe body and the pipe handle form an obtuse angle or a straight angle.

7. The medical cannula for enhancing drainage effect as claimed in claim 1, wherein the number of the drainage holes is plural, and the plurality of the drainage holes are arranged around the circumference of the tube body.

8. The medical cannula for enhancing drainage according to claim 7, wherein the drainage holes are symmetrically arranged along the circumferential surface of the tube body.

9. The medical cannula for enhancing drainage according to any of claims 1 to 8, wherein the support body further comprises a support member, and the support member is connected to at least one of the elastic members.