CN208492930U - A kind of sheath with metal developing ring - Google Patents

Abstract

The utility model embodiment discloses a kind of sheath with metal developing ring, including sheath tube body and developing ring；Wherein, sheath tube body is a hollow high-temperature shrinkage pipe, and sheath tube body inner tubal wall is fluted close to the setting of one end of nozzle, and developing ring is nested in groove, and the outer wall of developing ring and the bottom of groove fit, and the both ends of developing ring are in contact with the two sides of groove.The sheath provided in the utility model, the high-temperature shrinkage characteristic in the space and sheath tube body that are provided by groove, developing ring is simply and effectively fixed on to sheath tubular body, it reduces through directly fixed developing ring sheath surface defect caused by the mode on sheath tube body, and then alleviates the pain of patient.

Description

A kind of sheath with metal developing ring

Technical field

The utility model relates to medical equipment field more particularly to a kind of sheaths with metal developing ring.

Background technique

Sheath is also known as catheter sheath, is made of epitheca, expander and short-length guidewires.It is mainly used for periphery and intracardiac Minimally Invasive Surgery, During surgery for expanding percutaneous slit, establishing catheter channel and assisting to lead into precession arteries and veins or quiet artery.

The developing function of existing sheath is mainly provided by the developing ring in sheath.It is saturating by referring to x-ray in surgical procedure Depending on the position of lower sheath, and then determine the diseased region of patient.The mode that becket is added in existing sheath is directly to show metal Shadow ring is added on sheath tube body.

This sheath for directly adding developing ring, sheath tube body table is easily destroyed since difficulty of processing is larger, in process Face so that in sheath it is easy to form protrusion, recess, burr the defects of.When this sheath enters human body in the course of surgery, it can increase Add the contact surface of sheath and human body, and then aggravates the pain of patient.In order to solve this problem, a kind of band metal developing ring is proposed Sheath.

Utility model content

The utility model provides a kind of sheath with metal developing ring, aggravates patient's pain to solve sheath surface defect The problem of.

To solve the above-mentioned problems, the utility model provides technical solution below:

A kind of sheath with metal developing ring, including sheath tube body and developing ring；Wherein, sheath tube body is a hollow high temperature Collapsible tube, sheath tube body inner tubal wall is fluted close to the setting of one end of nozzle, and developing ring is nested in groove, the outer wall of developing ring It fits with the bottom of groove, the both ends of developing ring are in contact with the two sides of groove.

Optionally, sheath tube body is the identical high-temperature shrinkage pipe of internal diameter, and groove is positioned close to any end pipe of sheath tube body At mouth 1-10mm.

Optionally, sheath tube body includes the first tube body and the second tube body, and the first tube body is the identical high-temperature shrinkage pipe of internal diameter, Second tube body is the high-temperature shrinkage pipe of internal diameter gradual change, and the inner wall of the first tube body, the first tube body and the second tube body one is arranged in groove Body design, groove be arranged in the first tube body relative to the nozzle 1-10mm of the second tube body at.

Optionally, sheath tube body includes PE heat-shrink tube, FEP heat-shrink tube, PTFE heat-shrink tube and PVDF heat-shrink tube.

Optionally, the diameter of groove and the outer diameter of developing ring match, and the axial length of groove and the axial direction of developing ring are long Degree matches.

Optionally, the depth of groove and the wall thickness of developing ring match, and the wall thickness of developing ring is 0.04-0.1mm.

As shown from the above technical solution, the utility model provides a kind of sheath with metal developing ring, including sheath pipe Body and developing ring.Sheath tube body is a hollow high-temperature shrinkage pipe, and it is shrinkable that this sheath tube body meets high temperature.Meeting high temperature using it can receive Developing ring is fixed on sheath tubular body by the physical characteristic of contracting, is reduced and is fixed developing ring table caused by sheath in direct mode Planar defect, to mitigate the pain of patient.In order to further fix developing ring, sheath tube body inner tubal wall is set close to one end of nozzle It is equipped with groove, developing ring is nested in groove, and the outer wall of developing ring and the bottom of groove fit, the both ends of developing ring and groove Two sides be in contact.Developing ring is nested in groove, during not only can effectively avoiding installation developing ring, to sheath table The destruction in face, to reduce because sheath surface defect is pain caused by patient；Developing ring can also be fixed in groove, be prevented The inaccuracy of test result caused by only developing ring is run helter-skelter in use process.Developing ring is fixed on the process of sheath tubular body: first First, developing ring is fixed in groove；Secondly, sheath tube body is shunk by high-temperature heating, further developing ring is fixed on recessed In slot.The sheath provided in the utility model, the high-temperature shrinkage characteristic in the space and sheath tube body that are provided by groove, will develop Ring is simply and effectively fixed on sheath tubular body, reduces through directly fixed developing ring caused by the mode on sheath tube body Sheath surface defect, and then alleviate the pain of patient.

Detailed description of the invention

It, below will be to attached drawing needed in the embodiment in order to illustrate more clearly of the technical solution of the utility model It is briefly described, it should be apparent that, for those of ordinary skills, in the premise of not making the creative labor property Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is a kind of structural schematic diagram for sheath with metal developing ring that utility model provides；

Fig. 2 is the structural schematic diagram for another sheath with metal developing ring that utility model provides；

Detailed description of the invention: 1- sheath tube body, 2- developing ring, 3- groove, the first tube body of 11-, the second tube body of 12-.

Specific embodiment

Embodiment one

It is a kind of structural schematic diagram of the sheath with metal developing ring provided by the embodiment of the utility model referring to Fig. 1.It should Sheath includes sheath tube body 1 and developing ring 2.Sheath tube body 1 is a hollow high-temperature shrinkage pipe, this sheath tube body 1 is met high temperature and can be received Contracting.High temperature contractile physical characteristic is met using it developing ring 2 is fixed on inside sheath tube body 1, reduce solid in direct mode Developing ring surface defect caused by sheath is determined, to mitigate the pain of patient.In order to further fix developing ring 2, sheath pipe 1 inner tubal wall of body is arranged fluted 3 close to one end of nozzle, and developing ring 2 is nested in groove 3, the outer wall and groove 3 of developing ring 2 Bottom fit, the both ends of developing ring 2 are in contact with the two sides of groove 3.Developing ring 2 be nested in groove 3 and developing ring 2 with Groove 3 fits closely, during not only can effectively avoiding installation developing ring 2, the destruction to sheath pipe surface, to reduce Because sheath surface defect is pain caused by patient；Developing ring 2 can also be fixed in groove 3, prevent from showing in use process The inaccuracy of test result caused by shadow ring 2 is run helter-skelter.Developing ring 2 is fixed on the process inside sheath tube body 1: firstly, by developing ring 2 It is fixed in groove 3；Secondly, sheath tube body 1 is shunk by high-temperature heating, further developing ring 2 is fixed in groove 3.Sheath Pipe in use, is generally required one end i.e. sheath tube body 1 in whole 1 insertion body of root sheath pipe tube body, to take the lead in into human body Front end generally require mounting bracket, subsequently enter human body one end be mainly pushing sheath tube tube body 1 enter human body.Due to sheath The front and back end internal diameter of tube body 1 is identical, and when blood is by inside sheath, drag reduction, sheath tube body 1 and human contact are reduced, into And alleviate the pain of patient.In order to facilitate label diseased region, it is being arranged at 1 either end nozzle 1-10mm of sheath tube body Fluted 3, developing ring 2 is provided in groove 3.Lesion portion can be accurately determined according to the position of developing ring 2, and then is reduced Repeating label is injured caused by patient.The sheath provided in the utility model, the space provided by groove 3 and sheath tube body 1 high-temperature shrinkage characteristic, developing ring 2 is simply and effectively fixed on inside sheath tube body 1, is reduced through directly fixed developing ring 2 mitigate the pain of patient in the mode on sheath tube body 1 in turn to the defect of sheath pipe surface.

In order to which developing ring 2 is fixed in groove 3, in the present embodiment, the outer diameter phase of the diameter and developing ring 2 of groove 3 Match, the axial length of the axial length and developing ring 2 of groove 3 matches.Developing ring 2 when not entering groove 3, developing ring 2 Outer diameter is more than or equal to the diameter of groove 3.This is because sheath tube body 1 is high temperature collapsible tube.This sheath tube body 1 is reaching When to required shrinkable temperature, sheath tube body 1 is shrinkable to become smaller.When the outer diameter of developing ring 2 is greater than the diameter of groove 3, sheath Tube body 1 is shrinkable, so that the outer diameter of developing ring 2 is identical as the diameter of groove 3.When the outer diameter of developing ring 2 is equal to the diameter of groove 3 When, sheath tube body 1 is shunk so that the outer diameter of developing ring 2 diameter that is slightly less than groove 3 is identical, can also fix developing ring 2.

Sheath tube body 1 in use, needs to enter body interior, in order to reduce the contact with human body, and then reduces The pain of patient, requirement of the sheath tube body 1 to material are small with soft, coefficient of friction and high temperature contractile properties materials. In the present embodiment, sheath tube body 1 includes PE heat-shrink tube, FEP heat-shrink tube, PTFE heat-shrink tube and PVDF heat-shrink tube.PE heat-shrink tube is A kind of polyolefine material of speciality is made, and has the function of low-temperature shrink, soft fire-retardant, insulation corrosion protection.PE heat-shrink tube is in room It is glassy state under temperature, performance is close to plastics；Become elastomeric state after heating, performance is close to rubber when elastomeric state.FEP heat-shrink tube is also known as Poly(perfluoropropene) heat-shrink tube has many advantages, such as that coefficient of friction is small, chemical stability is good, high temperature is shrinkable.PTFE heat-shrink tube is also known as Perfluoroethylene-propylene heat-shrink tube has corrosion resistance, low-friction coefficient, the characteristics such as high temperature is shrinkable.PVDF heat-shrink tube is also known as poly- Vinylidene heat-shrink tube has the characteristics that corrosion resistance, hydrophobicity, coefficient of friction are small, high temperature is shrinkable.PE heat-shrink tube, FEP heat The draw, PTFE heat-shrink tube and PVDF heat-shrink tube have that coefficient of friction is small, the contractile characteristic of soft and high temperature, can be used as sheath The material of tube body 1.This sheath tube body 1 can not only smoothly enter human body, mitigate the pain of patient；It can also be simpler secured Fixation developing ring 2, mitigate 2 installation process of developing ring in, as sheath surface defect pain caused by patient.

In sheath use process, in order to enable blood to pass through inside sheath, sheath is reduced to the inhibition of blood, In the present embodiment, the depth of groove 3 and the wall thickness of developing ring 2 match.When the depth of groove 3 is more than or equal to the wall of developing ring 2 When thick, by the developing ring 2 that pyrocondensation characteristic is fixed, wall thickness is less than or equal to the depth of groove 3.Blood circulation sheath tube body 1 is empty When chamber, accessible cavity body reduces the contact surface of blood Yu developing ring 2, and blood is made to pass through developing ring 2.In order into one Step reduces the pain of patient, and since sheath tube body 1 is single layer structure pipe, the wall thickness of developing ring 2 is set as 0.04-0.1mm.With The wall thickness of developing ring 2 is reduced to 0.04-0.1mm from 0.1-0.2mm, and the wall thickness of sheath also gradually decreases.The reduction of sheath thickness of pipe wall, When so that sheath entering human body, reduce the contact area of human body and sheath, is further reduced the pain of patient.

As can be seen that the utility model provides a kind of sheath with metal developing ring, the sheath from above-described embodiment Pipe includes sheath tube body 1 and developing ring 2.Sheath tube body 1 is a hollow high-temperature shrinkage pipe, and it is shrinkable that this sheath tube body 1 meets high temperature. High temperature contractile physical characteristic is met using it developing ring 2 is fixed on inside sheath tube body 1, reduce fixed aobvious in direct mode The surface defect caused by sheath of shadow ring 2, to mitigate the pain of patient.In order to further fix developing ring 2, sheath tube body 1 Inner tubal wall is arranged fluted 3 close to one end of nozzle, and developing ring 2 is nested in groove 3, the outer wall of developing ring 2 and the bottom of groove 3 Portion fits, and the both ends of developing ring 2 are in contact with the two sides of groove 3.Developing ring 2 is nested in groove 3 and developing ring 2 and groove 3 fit closely, during not only can effectively avoiding installation developing ring 2, the destruction to sheath pipe surface, to reduce because of sheath Pipe surface defect pain caused by patient；Developing ring 2 can also be fixed in groove 3, prevent developing ring 2 in use process The inaccuracy of test result caused by running helter-skelter.Developing ring 2 is fixed on the process inside sheath tube body 1: firstly, developing ring 2 is fixed In in groove 3；Secondly, sheath tube body 1 is shunk by high-temperature heating, further developing ring 2 is fixed in groove 3.This is practical The high-temperature shrinkage characteristic of the sheath of novel middle offer, the space provided by groove 3 and sheath tube body 1, developing ring 2 is simply had Effect ground is fixed on inside sheath tube body 1, is reduced through directly fixed developing ring 2 in the mode on sheath tube body 1 to sheath pipe surface Defect so that mitigate patient pain.In order to make blood pass through sheath, identical internal diameter is set by sheath tube body 1. In order to facilitate label lesion portion, fluted 3 are being arranged at 1 either end nozzle 1-10mm of sheath tube body, setting in groove 3 There is developing ring 2.Sheath tube body 1 in use, needs to enter body interior, in order to reduce the contact with human body, and then subtract The pain of few patient, in the present embodiment, sheath tube body 1 includes PE heat-shrink tube, FEP heat-shrink tube, PTFE heat-shrink tube and PVDF pyrocondensation Pipe.In order to further mitigate the pain of patient, so that blood is passed through inside sheath, reduce sheath and the obstruction of blood is made With in the present embodiment, the depth of groove 3 and the wall thickness of developing ring 2 match.

Embodiment two

It referring to fig. 2, is the structural schematic diagram of another sheath with metal developing ring provided by the embodiment of the utility model. Sheath tube body 1 includes the first tube body 11 and the second tube body 12, and the first tube body 11 is the identical high-temperature shrinkage pipe of internal diameter, the second tube body 12 be the high-temperature shrinkage pipe of internal diameter gradual change.First tube body 11 and the second tube body 12 constitute a reducing sheath, reducing sheath The second tube body 12 have cutting-edge structure.When reducing sheath enters human body, the first tube body 11 takes the lead in entering, the second tube body 12 Enter therewith.The sheath of this reducing can reduce its resistance for entering human body, mitigate the pain of patient.In order to simplify knot Structure, the first tube body 11 and the second tube body 12 integrated design.Integrated formed structure can be by 12 jail of the first tube body 11 and the second tube body Admittedly be fixed together, prevent in use process, since the first tube body 11 and the second tube body 12 are staggered, increase sheath and human body Friction, aggravates the pain of patient.In sheath use process, the first tube body 11 takes the lead in entering human body, and the second tube body 12 enters therewith. In order to further facilitate label diseased region, groove 3 is set in the inner wall of the first tube body 11, groove 3 is arranged in the first tube body 11 At nozzle 1-10mm relative to the second tube body 12.Lesion portion can be accurately determined according to the position of developing ring 2, and then is subtracted Few repeating label is injured caused by patient.When developing ring 2 is placed in the second tube body 12, since 12 cavity of the second tube body is smaller, When blood passes through developing ring 2, it is easy blocking developing ring 2, the pain of patient is further aggravated.In the present embodiment, sheath tube body 1 is Reducing sheath, for reducing sheath compared with general sheath, resistance is smaller.In use, the first tube body 11 takes the lead in entering, Second tube body 12 enters therewith, and the cutting-edge structure of the second tube body 12 reduces the contact surface of sheath and human body, and then alleviates disease The pain of people.

Above-described embodiment, other than above-mentioned part is different from the first embodiment, rest part either structure or function It can all be identical with the first embodiment, details are not described herein again.

As can be seen that sheath tube body 1 provided by the embodiment of the utility model includes the first tube body 11 from above-described embodiment With the second tube body 12, the first tube body 11 is the identical high-temperature shrinkage pipe of internal diameter, and the second tube body 12 is the high-temperature shrinkage of internal diameter gradual change Pipe.First tube body 11 and the second tube body 12 constitute a reducing sheath, and the second tube body 12 of reducing sheath is tied with tip Structure.When reducing sheath enters human body, the first tube body 11 takes the lead in entering, and the second tube body 12 enters therewith.This reducing Sheath can reduce its resistance for entering human body, mitigate the pain of patient.In order to simplify structure, the first tube body 11 and the second tube body 12 integrated designs.In order to further fix developing ring 2 and reduce sheath to the contact surface of human body, set in the inner wall of the first tube body 11 Groove 3 is set, groove 3 is arranged at nozzle 1-10mm of first tube body 11 relative to the second tube body 12.In use, first Tube body 11 takes the lead in entering, and the second tube body 12 enters therewith, and the cutting-edge structure of the second tube body 12 reduces contact of the sheath with human body Face, and then alleviate the pain of patient.

From above-described embodiment as can be seen that whether embodiment one or the offer of embodiment two with metal developing ring Sheath can be met high-temperature shrinkage characteristic and the fixed developing ring 2 of groove 3 by sheath, reduce sheath surface defect, and then mitigate The pain of patient.

All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.It is each in this specification A the embodiments are all described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, Mei Geshi That applies that example stresses is the difference from other embodiments.Those skilled in the art are considering specification and practice here Embodiment after, will readily occur to other embodiments of the utility model.The utility model is intended to cover the utility model Any variations, uses, or adaptations, these variations, uses, or adaptations follow the general of the utility model Property principle and including the not used common knowledge or conventional techniques in the art of the utility model.Specification and reality It applies example to be considered only as illustratively, the true scope and spirit of the utility model are indicated by the following claims.

It should be understood that the utility model is not limited to the accurate knot for being described above and being shown in the accompanying drawings Structure, and various modifications and changes may be made without departing from the scope thereof.The scope of the utility model is only wanted by appended right It asks to limit.

Claims (6)

1. a kind of sheath with metal developing ring, which is characterized in that including sheath tube body (1) and developing ring (2)；Wherein, described Sheath tube body (1) is a hollow high-temperature shrinkage pipe, and sheath tube body (1) inner tubal wall is fluted close to the setting of one end of nozzle (3), the developing ring (2) is nested in the groove (3), the bottom phase of the outer wall and the groove (3) of the developing ring (2) Fitting, the both ends of the developing ring (2) are in contact with the two sides of the groove (3).

2. sheath according to claim 1, which is characterized in that the sheath tube body (1) is the identical high-temperature shrinkage of internal diameter Pipe, the groove (3) are positioned close at sheath tube body (1) the either end nozzle 1-10mm.

3. sheath according to claim 1, which is characterized in that the sheath tube body (1) includes the first tube body (11) and the Two tube bodies (12), first tube body (11) are the identical high-temperature shrinkage pipe of internal diameter, and second tube body (12) is internal diameter gradual change High-temperature shrinkage pipe, inner wall of the groove (3) setting in first tube body (11), first tube body (11) and described the Two tube bodies (12) integrated design, the groove (3) are arranged in first tube body (11) relative to second tube body (12) At nozzle 1-10mm.

4. sheath according to claim 1-3, which is characterized in that the sheath tube body (1) include PE heat-shrink tube, FEP heat-shrink tube, PTFE heat-shrink tube and PVDF heat-shrink tube.

5. sheath according to claim 4, which is characterized in that the diameter of the groove (3) is outer with the developing ring (2) Diameter matches, and the axial length of the axial length and the developing ring (2) of the groove (3) matches.

6. sheath according to claim 5, which is characterized in that the depth of the groove (3) and the wall of the developing ring (2) Thickness matches, and the wall thickness of the developing ring (2) is 0.04-0.1mm.