TWM530154U - Piercing needle guide - Google Patents

Description

Pin guide

The present invention relates to an introducer, and more particularly to a pin guide for guiding a needle to puncture a blood vessel.

When the dialysis patient washes the kidney, the medical staff will puncture the needle in the fistula, introduce the blood into the dialysis machine for treatment, and drain the treated blood back to the patient. In order to facilitate the alignment of the needle into the fistula, a pin guide that can be installed outside the fistula has been developed, and the medical staff will fix a plurality of pin guides outside the fistula of the patient and The pin guide is embedded under the body surface. When a needle puncture is required, the pin guide can be found by touching the body surface, and the blood-derived needle and the blood-introducing needle are respectively aligned. The pin guides perform the puncture.

In order to extend the service life of the fistula, it is not possible to puncture the same part of the fistula every time, but the current needle introducer design can only be used for puncture of the same part of the fistula, in order to meet the above-mentioned fistula use In order to install, it is quite inconvenient to install and fix a large number of pin guides outside the manifold.

Accordingly, it is an object of the present invention to provide a pin guide that improves at least one of the disadvantages of the prior art.

Thus, the novel pin guide is adapted to be mounted and fixed to a blood vessel and can be used to guide the needle into the blood vessel. The pin guide includes a fixing piece and a plurality of guiding rings protruding from the fixing piece. The fixing piece includes an abutting surface for attaching to the outer peripheral surface of the blood vessel, and a side surface facing away from the abutting surface, and having a plurality of longitudinal spacings along the blood vessel and extending through the abutting A curved positioning hole for the curved surface and the outer side surface. The guiding rings are disposed on the outer side of the fixing piece along the length of the fixing piece, and each of the guiding rings is in communication with the at least one puncture positioning hole.

Therefore, the new pin guide is suitable for being mounted and fixed on a blood vessel for guiding the needle into the blood vessel. The pin guide includes a fixing piece and a guiding ring protruding from the fixing piece. The fixing piece includes an abutting surface for attaching against the outer peripheral surface of the blood vessel, and a side surface facing away from the abutting curved surface, and having two longitudinal spacings along the blood vessel and extending through the abutting surface A curved positioning hole for the curved surface and the outer side surface. The guiding ring includes a ring protruding outwardly from the outer side surface and surrounding the piercing positioning hole, and a guiding protrusion connected to the inner peripheral side of the ring wall and protruding outward from the outer side surface, The guiding protrusion has two guiding slopes disposed along the longitudinal direction of the blood vessel and inclined outwardly from the outer side surface, and the guiding slopes cooperate with the ring wall to define two outward sides The direction gradually extends away from each other, and the guiding channels respectively communicate with the puncture positioning holes.

The utility model has the advantages that the structural design of the pin guide has a plurality of guiding rings, in addition to minimizing the number of pin guides required for the patient to be installed, and facilitating the medical personnel to select different pairs. The guiding ring performs needle puncture to avoid continuous puncture of the same part of the blood vessel in a short period of time, which helps to prolong the service life of the blood vessel.

Referring to Figures 1, 2, and 3, the first embodiment of the present invention relates to a first embodiment of the present invention. The first embodiment of the present invention is adapted to be mounted on a blood vessel 800 of a user and embedded in a body surface 801 for guidance. The needle 900 is punctured into the blood vessel 800.

The pin guide includes a fixing piece 3 and a plurality of guiding rings 4 protruding from the fixing piece 3. The fixing piece 3 extends in a long shape along the length of the blood vessel 800, and includes a downwardly facing abutting surface 31 for abutting against the outer peripheral surface of the blood vessel 800, and a backing surface 31 opposite thereto. The upper side 32 of the upper side further has a plurality of puncture positioning holes 33 extending through the abutting surface 31 and the outer side surface 32 along the longitudinal spacing thereof, and a plurality of piercing positioning holes 33 extending through the abutting surface The slits 34 are formed around the outer side surface 32 and spaced around the circumference of the puncture positioning holes 33.

The guiding rings 4 are respectively protruded from the outer side surface 32 so as to surround and connect with one piercing positioning hole 33. Each of the guide rings 4 is gradually inclined outwardly toward the outer end of the fixing piece 3, and has a tapered ring shape with an opening obliquely upward. In this embodiment, three guiding rings 4 are disposed on the fixing piece 3, but in implementation, the number of the guiding rings 4 can be increased or decreased as needed, and at least two can be used.

When the needle guide is installed in the blood vessel 800, the abutting surface 31 of the fixing piece 3 is abutted against the outer peripheral surface of the blood vessel 800, and then the suture 901 passes through the suture hole 34. In a manner, the fixing piece 3 is sewn and fixed to the blood vessel 800, and then the pin guiding device is buried under the skin to complete the mounting of the pin guide. When installed and used, a needle guide can be installed in the section where the blood vessel 800 is supplied with blood, and the section for introducing blood.

After the insertion of the pin guides, the medical staff must perform the needle 900 puncture operation on the blood vessel 800, and the respective pin guides can be found by the guide rings 4 which are arranged with the protrusions through the touch body table 801. The guide can be selected by one of the guide rings 4, and the needle 900 can be aligned with the selected guide ring 4, so that the guide ring of the guide ring 4 can be utilized. In the design, the needle 900 is guided through the corresponding puncture positioning hole 33 to penetrate the blood vessel 800.

Since the pin guide has a plurality of guiding rings 4, and the puncture positioning holes 33 communicating with each of the guiding rings 4 are respectively aligned with different parts of the blood vessel 800, the medical staff can puncture according to the previous needle 900. Recording, selecting other guiding ring 4 as the site of the needle 900 piercing, can achieve the requirement of avoiding continuous puncture of the same part of the blood vessel 800 in a short period of time, and can guide the needle to be mounted on the blood vessel 800. The number of devices is minimized, and it is only necessary to install a new pin guide for each of the blood vessel segments that lead the blood out and return blood, which is more convenient to use.

Referring to Figures 4 and 5, the second embodiment of the novel pin guide differs from the first embodiment in the structural design of the lead rings 4. For convenience of description, only the differences between the present embodiment and the first embodiment will be described below.

In the present embodiment, the guiding rings 4 respectively cover two puncture positioning holes 33. Each of the guide rings 4 includes a ring wall 41 projecting upwardly from the outer side surface 32 to communicate with the puncture locating holes 33, and a ring protruding from the outer side surface 32 and connected to the inner peripheral side of the ring wall 41. The guiding protrusion 42 is guided, and the guiding protrusion 42 is interposed between the piercing positioning holes 33 surrounded by the ring wall 41. The ring wall 41 has a narrowing ring portion 411 protruding upward from the outer side surface 32 and gradually narrowing the front and rear inner diameters upward, and a radially extending outer end extending from the narrowing ring portion 411 The protruding portion abuts against the ring portion 412.

The guiding protrusion 42 is connected to the inner circumferential side of the narrowing ring portion 411, and has two guiding inclined surfaces 421 which are inclined back and forth and which are inclined upward and backward toward each other, and the guiding inclined surfaces 421 and the narrowing The ring portion 411 cooperates to define two front and rear spaces, and guide channels 40 that extend obliquely downwardly forward and backward to communicate with the puncture positioning holes 33, respectively.

The manner in which the pin guide is fixed to the blood vessel 800 in this embodiment is substantially the same as that of the first embodiment, and will not be described again.

When the pin guide is used, the guide ring 4 is also found through the touch body 801, and one of the guide rings 4 is selected for the needle 900 to puncture, since each guide ring 4 covers two The positioning holes 33 are pierced, so each of the guiding rings 4 further provides two puncture sites to choose from. After one of the puncture positioning holes 33 of one of the guide rings 4 is selected, the needle 900 is abutted against the top end of the abutment ring portion 412 of the selected guide ring 4 toward the pin guide extending direction. And tilting downward toward the direction of the puncture positioning hole 33 to be used for puncture, and then puncture the needle 900 obliquely into the guiding ring 4, the needle 900 will penetrate the corresponding guiding channel 40, and be guided by the guiding The guiding channel 40 is guided downward through the puncture positioning hole 33 to be punctured, and is inserted into the blood vessel 800 to complete the needle 900 puncturing operation.

The two puncture positioning holes 33 are covered by each of the guiding rings 4, and two structural designs of the guiding channels 40 respectively communicating with the puncture positioning holes 33 are defined, except that each guiding ring 4 can have two punctures. The position can be selected, and the penetration stability and accuracy can be improved through the guidance of the guiding channels 40.

Referring to FIG. 6, in the embodiment, when the pin guide is installed on the blood vessel 800 for dialysis of a diabetic patient, since the pin guide is provided with a plurality of guide rings 4, the distance is the most The farthest outer two guiding rings 4 have a certain distance, so the outermost two guiding rings 4 can be selected to guide the puncture needle 900, and the needle 900 for withdrawing blood can be used to return blood to the blood vessel. The needle 900 is inserted into the blood vessel 800 through the outermost two puncture positioning holes 33 along the longitudinal direction of the blood vessel 800, and the distance between the openings of the needle 900 is greater than the distance between the puncture positioning holes 33. A single pin guide can be used to drain the blood and return it to the blood. Moreover, by increasing the number of the guide rings 4, the length of the entire pin guide can be further extended, so that the two needles 900 inserted in the outermost two puncture positioning holes 33 are further apart.

In addition, in practice, since a single guide ring 4 can provide two parts of the blood vessel 800 for selection, the pin guide can also be provided with only one guide ring 4, which can also be avoided. The problem of continuously puncturing the same part of the blood vessel 800.

Referring to Figures 7, 8, and 9, the third embodiment of the novel pin guide differs from the first embodiment in that the pin guide further includes two clips 5, and the collar can be positioned The blood vessel is 800.

In this embodiment, the fixing piece 3 has two pivoting edges 35 extending along the longitudinal direction of the blood vessel 800. The clamping pieces 5 are pivotally pivotally respectively disposed on the pivoting edges 35, and are opposite to each other. The pivotal engagement is engaged with the fixing piece 3 to position the outer sleeve of the blood vessel 800.

Each clip piece 5 has a blade-shaped clip portion 51 pivotally disposed on each of the pivoting edges 35 and extending outward from the pivoting edge 35, and a protruding portion 51 of the clip portion 51 An engaging portion 52 that extends to the side and is detachably snap-engageable with the other clip piece 5. In this embodiment, the joint portions 52 are designed to be joined by a radial card engaging structure of the groove and the rib. However, in practice, since the two joint portions 52 are detachably snap-fitted, the structure is numerous. Therefore, the implementation is not limited to the above embodiments.

When the new pin guide is installed and used, the clips 5 can be pivoted back to each other, and after the fixed piece 3 is attached to the blood vessel 800, the clips 5 are pivoted toward each other. The pendulum is engaged such that the fixing piece 3 cooperates with the clamping pieces 5 to form a circular tube, and the sleeve is positioned outside the blood vessel 800. By designing the pin guide as a structural design that is looped over the blood vessel 800, in addition to not being sewn to the blood vessel 800 through the suture, when the medical staff pushes the needle 900 down into the blood vessel 800, it feels When the needle 900 hits the hard object, it means that the tip of the needle 900 has penetrated the blood vessel 800 and touched one of the clip pieces 5. The medical staff should partially pull back the needle 900, so that the needle 900 can be small. When the tip is worn out of the blood vessel 800, it is found that the large outer diameter portion of the needle 900 is prevented from penetrating the blood vessel 800, causing a large amount of blood leakage.

In the embodiment, the fixing piece 3 is not provided with the slit holes 34, and the surgical procedure of suturing and fixing with the suture 901 can be omitted, so that the insertion of the pin guide is simple, but when implemented, A plurality of slit holes 34 may be bored at both ends of the fixing piece 3 so as to be further sewn by the suture 901, so that the pin guide is more stably mounted and positioned on the blood vessel 800. Furthermore, the structural design of the clips 5 can also be transferred to the second embodiment when implemented.

In summary, the pin guide has a plurality of design structures of the guide ring 4, in addition to minimizing the number of pin guides that the patient needs to use, and it is convenient for the medical staff to select different ones. The guiding ring 4 performs the puncture of the needle 900 to avoid continuous puncture of the same portion of the blood vessel 800 in a short period of time, thereby contributing to prolonging the service life of the blood vessel 800. Further, the guiding ring 4 has a structural design of the guiding channel 40, which improves the puncture stability and accuracy of the needle 900, and can be matched with the fixing piece 3 by the clamping piece 5 The design located outside the blood vessel 800 eliminates the surgical procedure of suturing and fixing with the suture 901, so that the insertion of the pin guide is simple. It is quite convenient and practical, so it can achieve the purpose of this new type.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

3‧‧‧Fixed tablets
31‧‧‧Abut the curved surface
32‧‧‧Outside
33‧‧‧Puncture positioning hole
34‧‧‧Slotted holes
35‧‧‧ pivoting edge
4‧‧‧ Guide ring
40‧‧‧ Guide channel
41‧‧‧Circle
411‧‧‧narrow ring
412‧‧‧Attend the ring
42‧‧‧Guiding convex body
421‧‧‧ Guided slope
5‧‧‧ clips
51‧‧‧ Clips Department
52‧‧‧ joints
800‧‧‧ blood vessels
801‧‧‧ body surface
900‧‧‧ needle
901‧‧‧ stitching

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is an incomplete, three-dimensional, anatomical view illustrating a first embodiment of the present invention. 2 is an incomplete side cross-sectional view illustrating the case where the first embodiment is mounted on a blood vessel; FIG. 3 is a cross-sectional view showing the first embodiment mounted on the blood vessel; FIG. 4 is not A complete three-dimensional sectional view illustrating a second embodiment of the novel pin guide; FIG. 5 is an incomplete side cross-sectional view schematically illustrating the second embodiment mounted on the blood vessel and for guiding a Figure 6 is a view similar to Figure 5, illustrating the second embodiment of the two guides for guiding blood out and returning blood to the needle of the blood vessel; Figure 7 is an incomplete three-dimensional 1 is a cross-sectional view showing a third embodiment of the present invention, in which a third embodiment of the present invention is mounted on a blood vessel; FIG. 8 is a rear side cross-sectional view showing the two clips of the third embodiment being joined Set up The outer aspect of the vessel; and FIG. 9 is a rear side exploded view illustrating the third embodiment of these embodiments of posing clip pivoting cleat aspect when opening.

3‧‧‧Fixed tablets

31‧‧‧Abut the curved surface

32‧‧‧Outside

33‧‧‧Puncture positioning hole

34‧‧‧Slotted holes

4‧‧‧ Guide ring

800‧‧‧ blood vessels

Claims (10)

A pin guide adapted to be mounted and fixed to a blood vessel for guiding a needle into the blood vessel, the pin guide comprising: a fixing piece, comprising a member for mounting against the outer peripheral surface of the blood vessel Abutting the arc surface, and a side facing away from the arcuate surface, and having a plurality of puncture positioning holes distributed along the longitudinal spacing of the blood vessel and extending through the abutting arc surface and the outer side surface; and a plurality of guides Leading rings are arranged on the outer side along the length of the fixing piece, and each guiding ring is in communication with at least one piercing positioning hole. The pin guide according to claim 1, wherein each of the guide rings is gradually expanded from the outer side surface to form a tapered ring shape. The pin guide according to claim 2, wherein each of the guide rings is gradually tapered from the outer side toward the one end of the fixing piece to form a tapered ring shape. The pin guide of claim 1, 2 or 3, wherein the fixing piece has a plurality of slit holes extending through the abutting surface and the outer side and spaced along the circumference thereof. The pin guide of claim 1, wherein each of the guide rings includes a ring wall projecting outwardly from the outer side and surrounding the two piercing positioning holes, and a ring connected to the inner circumference of the ring wall a guide protrusion protruding outwardly from the outer side surface, the guiding protrusion having two guiding slopes disposed along the length of the fixing piece and extending obliquely outward from the outer side surface, and the guiding guide The guiding inclined surface cooperates with the annular wall to define two guiding passages which gradually extend away from the outer side surface and communicate with the puncture positioning holes respectively. The pin guide of claim 5, wherein the ring wall has a narrowing ring portion that gradually tapers outwardly along the length of the fixing piece, and a taper from the end of the narrowing ring portion The protruding portion abuts against the ring portion, and the narrowing ring portion cooperates with the guiding inclined surfaces to define the guiding channels. The pin guide of claim 1 or 5, wherein the fixing piece further comprises two pivoting edges extending along the longitudinal direction of the blood vessel, the pin guiding device further comprising two pivoting members respectively The armature is connected to the side of the blood vessel and can be pivotally engaged with the fixing piece to engage the clip piece outside the blood vessel. The pin guide according to claim 7, wherein each of the clip pieces has a clip portion pivoted on each of the pivotal edges and which can be clamped to the outer peripheral surface of the blood vessel, and one can be combined with the other A clip piece can be detachably engaged with the joint. A pin guide adapted to be mounted and fixed to a blood vessel for guiding a needle into the blood vessel, the pin guide comprising: a fixing piece, comprising a member for mounting against the outer peripheral surface of the blood vessel Abutting the arc surface, and a side facing away from the arcuate surface, and having two piercing positioning holes distributed along the longitudinal spacing of the blood vessel and extending through the abutting arc surface and the outer side surface; a guiding ring The utility model comprises a ring protruding outwardly from the outer side surface and surrounding the piercing positioning hole, and a guiding protrusion connected to the inner peripheral side of the ring wall and protruding outward from the outer side surface, the guiding convex The body has two guiding slopes disposed along the longitudinal direction of the blood vessel and inclined outwardly from the outer side surface, and the guiding slopes cooperate with the annular wall to define two directions extending toward the outer side surface A guiding channel that is separated from each other and communicates with the puncture positioning holes. The pin guide of claim 9, wherein the fixing piece further comprises two pivoting edges extending along the longitudinal direction of the blood vessel, the pin guiding device further comprising two pivoting arms respectively The edge is joined, and the clamping piece can be pivotally engaged with the fixing piece to fit around the outer tube of the blood vessel.