DE202007015955U1 - Needle for piercing tissue and cartilage for atraumatic transport of a suture - Google Patents

Abstract

surgical Needle, with an elongate body (12), whose distal End (18; 42; 62; 82; 102; 122) as a needle tip (20; 44; 64; 84; 104; 124; 144; 154; 167) is formed, wherein the body (12) at its distal end (18; 42; 62; 82; 102; 122) at least an eyelet (22; 50, 52; 70, 72; 90) designed as a groove 92; 110; 130, 132; 142; 152; 168, 170) for a surgical Thread (172) extending partially in the longitudinal direction of the body (12) and having at one end an opening (26; 54, 56; 76; 96; 112; 134, 136) for introducing the thread (172) into the eyelet (22; 50, 52; 72; 92; 110; 130, 132; 142; 152; 168), characterized in that the at least one eyelet (22; 50, 52; 72; 92; 110; 130, 132; 142; 152; 168) Needle tip (20; 44; 64; 84; 104; 124; 144; 154; 167) facing End is open, and that ...

Description

The The invention relates to a surgical needle having an elongated one Body whose distal end is formed as a needle point is, wherein the body at least at its distal end a trained as a groove eyelet for a surgical Having thread that partially in the longitudinal direction of the Body extends and at one end an opening to the Having introduced the thread in the eyelet.

Such a surgical needle is out EP 0 216 538 A1 known.

surgical Needles are well known. Such needles are at different Types of surgical procedures used to surgical sutures to lay.

To the needle passes through with a thread inserted in the eyelet punctured tissue to be sutured. Then the needle removed from the tissue, with the surgical thread inside of the tissue remains, and the needle is again through the tissue pierced near the first stitch. In the eye the needle becomes a loop of thread protruding from the tissue inserted and pulled out with the needle from the tissue. From the fabric protruding ends of the thread are linked together, causing a surgical suture.

In the aforementioned EP 0 216 538 A1 discloses a surgical needle having at its distal end formed as a needle tip at least partially along the needle extending eyelet, which serves to receive a surgical thread. In one embodiment, the eyelet is open at an end remote from the needle tip. In another embodiment, the eyelet is open at its needle tip end. The surgical needle, the eyelet of which is open at its end facing the needle tip, serves to transport the thread as the needle pierces the tissue. The needle with the eyelet open at the end remote from the needle tip serves to transport the thread as the needle is withdrawn from the tissue.

At the Laying the seams is first the thread in the eyelet the needle is inserted, which is used for transporting the thread Piercing the needle through the tissue. Then the needle through a tissue, such as a torn muscle or a torn tendon, as far as pierced, that the needle point and her distal section with the eyelet and with the eyelet in the eyelet inserted thread protrudes from the tissue. Then the needle removed, leaving the thread inside the tissue, and the second needle used for the transport of the thread Pulling out the needle from the tissue is done without thread the fabric was punctured near the first stitch. In the eyelet, which is open at the end remote from the needle tip is, one of the fabric protruding loop of the inside of the fabric remaining thread is inserted and the thread is with the needle pulled out of the tissue. The processes can be repeated as often as required, eliminating multiple surgical sutures be placed.

The eyelets the known needle described above are designed such that the extension of the opening of the eyelet formed as a groove in the longitudinal direction is greater than the extension the eyelet in the longitudinal direction. This creates the Risk of the thread being pulled out through the fabric when being transported the eye formed in this way can fall out. This would lead to unnecessary traumatization of the tissue and prolong the operation time, because the tissue would have to be punctured again.

Of the Invention is based on the object, a surgical needle of to create the aforementioned type, in which the thread when laying the seams are better secured against falling out.

According to the invention this task in terms of the aforementioned surgical needle thereby solved that at least one eyelet at her the Needle tip facing the end is open, and that the extension the eyelet in the longitudinal direction larger is as the extent of the opening in the longitudinal direction.

The needle according to the invention has the advantage that by an embodiment of the eyelet, in which its extension in the longitudinal direction is greater than the extent of its opening in the longitudinal direction, in the thus formed eyelet Inlaid thread is better secured against falling out, because of Thread with its entire cross section deep in the eyelet too lie down while the opening just about like that is great, like the thread cross section.

When using the needle, a surgical thread is inserted into the eyelet, which is open at its end facing the needle point. If necessary, the operator will hold the free ends of this surgical thread tight and the needle will be pierced with the thread through the tissue without the risk of the thread falling out of the loop. The fact that the extent of the eyelet in the longitudinal direction is greater than the extent of the opening of the eyelet in the longitudinal direction, it is ensured that the thread remains even with a relaxed tension of the thread in the eyelet. Such a trained needle is easier for the surgeon to use, because the thread even in small Inattention of the surgeon is secured against falling out.

By the inventive design of the eyelet It also ensures that the thread is pierced through tissue not in contact with the tissue or cartilage comes because the thread is at a sufficient distance from the opening the eyelet is located.

Consequently the problem underlying the invention is solved.

In a preferred embodiment of the invention, the body at its distal end a second formed as a groove eyelet on, partially in the longitudinal direction of the body extends and the extension of the eyelet in the longitudinal direction is greater than the extent of the opening longitudinal.

These Measure has the advantage that the thread at the same time in two similarly trained eyelets are inserted can, eliminating the possibility that he's out of eyelets falls out, is further reduced.

In Further preferred embodiments of the invention is the second eyelet open at its needle tip end and in relation to the first eyelet circumferentially offset.

By such a configuration of the needle, the thread during piercing of the fabric are inserted simultaneously in two eyelets. This reduces the possibility of the thread being laid the sutures from the needle releases. Even if the thread falls out of an eyelet, he remains at least in the second eyelet lie.

In Further preferred embodiments of the invention is the second eyelet open at its end facing away from the needle tip and the second eyelet is located at the same circumferential location with respect to the first eyelet and the two eyelets extending in opposite directions form a loop pair.

These Measures have the advantage that such a trained Needle both a safe transport of the thread when piercing the tissue as well as a safe transport of the thread when Extracting the needle from the tissue ensured. at the use of such a trained needle is the thread in the eyelet of Ösenpaars inserted, the at the end facing the needle point is open. Then the needle with the thread through the tissue so far punctured that the Needle tip and the distal end with the eyelets from the tissue protrude. After piercing, the needle is carefully removed removed from the tissue so that the thread remains inside the tissue.

Subsequently the same needle without thread is again pierced through the tissue and although far enough to the distal section with the eyelets protruding from the tissue. A loop protruding from the fabric of the remaining thread inside the fabric is in the at her the needle tip facing away from the open eyelet inserted and The thread is pulled out of the tissue with the needle. It is thus possible, the seams only with a single Needle to lay.

In a further preferred embodiment of the invention, the Body at its distal end at least two Ösenpaare on, which are circumferentially offset.

These Measure has the advantage that both when piercing the needle through the tissue as well as pulling out the needle from the fabric of the thread simultaneously in two circumferentially offset eyelets can be inserted. Thus, the thread is when laying the seams especially against falling out, because even if the thread falling out of an eyelet, he is still in the second eyelet remains.

In Further preferred embodiments of the invention are the openings the eyelets, which form the eyelet pair, from each other separated or the openings of the eyelets form one common opening.

The Both variants are very suitable for the safe Transport of the thread both when piercing the needle through the Tissue as well as pulling the needle out of the tissue.

In Another preferred embodiment of the invention is End point of the needle tip on the central longitudinal axis of the needle.

In an alternatively preferred embodiment of the invention is the End point of the needle tip relative to the central longitudinal axis the needle laterally offset.

Further Features and advantages will become apparent from the following description and the attached drawing.

It it is understood that the above and the following yet to be explained features not only in the specified Combinations, but also in other combinations or in isolation can be used without departing from the scope of the present invention.

The invention is described below with reference toi ger selected embodiments in conjunction with the accompanying drawings described and explained. Show it:

1 a side perspective view of a surgical needle according to the invention;

2 an enlarged view of a distal end of the needle in 1 in a section along a central longitudinal axis of the needle;

3 a further embodiment of a needle in one of the representation in 2 comparable illustration, which has two circumferentially offset eyelets;

4 a further embodiment of a needle in one of the representation in 2 comparable representation, in which two eyelets form a Ösenpaar;

5 a further embodiment of a needle in one of the representation in 2 comparable representation, which has two circumferentially offset Ösenpaare;

6 a further embodiment of a needle in one of the representation in 2 comparable illustration in which an opening of the eyelet has a diameter which is smaller than the diameter of a surgical thread;

7 a further embodiment of a needle in one of the representation in 2 comparable representation, which has two circumferentially offset eyelets, the same as the eyelet of the embodiment in 6 are trained;

8th a further embodiment of a needle in one of the representation in 2 comparable representation in which an end point of the needle tip is laterally offset with respect to the central longitudinal axis of the needle;

9 a further embodiment of a needle in one of the representation in 2 comparable representation in which the end point of the needle tip is laterally offset with respect to the central longitudinal axis of the needle;

10 a section through a tissue to be treated, the needle according to the invention has not yet been inserted into the tissue;

11 one of the sectional view in 10 comparable sectional view, wherein the needle is pierced through the tissue;

12 one of the sectional view in 10 comparable sectional view, wherein the needle is pierced a second time through the tissue; and

13 one of the sectional view in 10 Comparable sectional view, wherein the needle is pulled out with the thread from the tissue.

An in 1 shown surgical needle is in its entirety by the reference numeral 10 designated.

As in particular from 1 shows, the inventive surgical needle 10 an elongated body 12 on. At a proximal end 14 of the body 12 is a handle 16 arranged. The needle 10 However, it can also be designed without a handle for use with a needle holder. A distal end 18 of the body 12 is as a needlepoint 20 educated. Further, the distal end 14 of the body 12 with at least one eyelet 22 provided, as is apparent in particular from the enlarged view in 2 is apparent.

The eyelet 22 is formed as a groove extending at least partially in the longitudinal direction of the body 12 extends. The trained as a groove eyelet 22 , which serves to receive a thread, not shown here, is at her the needle point 20 facing end open. The extent of the eyelet 22 in the longitudinal direction is greater than the extension of an opening 26 the eyelet 22 longitudinal. This causes one in the eyelet 22 inserted thread is secured against falling out. An endpoint 28 the needle tip 20 lies on the central longitudinal axis 24 ,

Another needle 40 whose distal end 42 in 3 is shown also has a needle point 44 on, whose endpoint 46 on a central longitudinal axis 48 lies.

In contrast to the embodiment in 2 is a distal end 42 the needle 40 with two eyelets 50 . 52 provided, which are circumferentially offset. In this embodiment, the second eyelet 50 in relation to the first eyelet 52 offset by 180 °.

Both eyelets 50 . 52 are formed as a groove extending at least partially in the longitudinal direction of the needle 40 extends and at her the needle point 44 facing the end is open. The extension of an opening 54 . 56 in the longitudinal direction is smaller than the extension of the eyelets 50 . 52 longitudinal.

In 4 and 5 are two more needles 60 . 80 shown.

A distal end 62 . 82 every needle 60 . 80 is as a needlepoint 64 . 84 trained, whose endpoint 66 . 86 also on a central longitudinal axis 68 . 88 lies.

In the 4 illustrated surgical needle 60 indicates at its distal end 62 two eyelets each formed as a groove 70 . 72 on. The extension of the eyelets 70 . 72 in the longitudinal direction is greater than the extension of the openings 74 . 76 the eyelets 70 . 72 longitudinal. In contrast to the aforementioned embodiments, the eyelet 70 at her the needle point 64 opposite end open, the eyelet 72 is on the other hand, at her needlepoint 64 facing end open. The two eyelets extending in opposite directions 70 . 72 are located at the same circumferential location of the body of the needle 60 so they have a loop pair 73 form. openings 74 . 76 the eyelets 70 . 72 , the eyelet pair 73 form are separated in this embodiment, as shown 4 is apparent.

Unlike the aforementioned needle 60 points the needle 80 two eyelet pairs 93 . 95 on, which are circumferentially offset. In this embodiment, the second eyelet pair 95 in relation to the first eyelet pair 93 offset by 180 °. Another difference is the openings 94 . 96 the eyelet pair 93 forming eyelets 90 . 92 a common opening, as from the representation of 5 is apparent.

In 6 and 7 are two more needles 100 . 120 shown.

A distal end 102 . 122 every needle 100 . 120 is also as a needle point 104 . 124 trained, whose endpoint 106 . 126 on a central longitudinal axis 108 . 128 lies.

In the 6 illustrated needle 100 has at its distal end designed as a groove eyelet 110 on. The eyelet 110 is also open at one end with an opening 112 the eyelet 110 is formed significantly narrower compared to all the aforementioned embodiments. A diameter of the narrowed opening 112 should be slightly smaller than the diameter of a surgical suture inserted into the eye 110 is inserted, whereby the thread is secured against falling out. The eyelet 110 extends from the opening both distally and proximally.

In the 7 illustrated needle 120 has two circumferentially offset eyelets 130 . 132 on, the same as the eyelet 110 the needle 100 from 6 are formed. In this embodiment, the two eyelets 130 . 132 offset by 180 °.

Two more needles 140 . 150 , in the 8th . 9 are shown, each having a groove formed as a groove 142 . 152 on, at one of the needlepoint 144 . 154 facing the end is open.

In contrast to all the above-mentioned embodiments is an endpoint 146 . 156 the needle tip 144 . 154 relative to a central longitudinal axis 148 . 158 laterally offset. At the in 9 illustrated needle 150 is the endpoint 156 so far laterally offset that the needle point 154 on a wall 160 the needle 150 is formed.

A use of the surgical needle according to the invention will be made with reference to FIG 10 to 13 briefly explained.

In 10 is schematically a tissue 162 shown partially ripped. For example, it may be a broken tendon. Furthermore, in 10 a distal section 166 a surgical needle 164 represented, which is the same as in the 4 illustrated needle 60 ,

In a trained as a groove eyelet 168 standing at her one needle point 167 facing end is open, is a thread 172 inserted. Two ends of the thread 172 are first held tight by the surgeon. Then the surgical needle 164 in one by an arrow 174 indicated direction moves and through the tissue 162 so far punctured that the top 167 and the two eyelets 168 . 170 from the other side of the fabric 162 protrude. This situation is in 11 shown.

Subsequently, the thread 172 from the eyelet 168 removed by the needle 164 from the tissue 162 is pulled out, as by an arrow 176 is indicated. When retracting the needle 164 occurs the thread 172 by itself from the eyelet 168 out.

When pulling out the needle 164 It should be noted that the thread 172 inside the fabric 162 remains and from both sides of the fabric 162 stands out, as can be seen from the presentation of 12 evident.

Then the same surgical needle 164 again through the tissue 162 pierced so that its distal end portion 166 from the tissue 162 protrudes and on the same side, where a loop 178 of the doubly taken in the tissue 162 remaining thread 172 protrudes. The site where the tissue is punctured the second time is near the first puncture site. The loop 178 is in the trained as a groove eyelet 170 at her needlepoint 167 opposite end is open, inserted as indicated by an arrow 180 in 12 is indicated. After that, the surgical needle 164 with the thread 172 from the tissue 162 pulled out, as from the representation in 13 evident. Then the ends of the thread 172 with each other ties, creating a surgical suture. To place more seams, the steps can be repeated.

All aforementioned needles described by way of example can Metal or made of a plastic material and can be an approximately circular arc, in particular circular cross section or a polygonal cross section exhibit.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 0216538 A1 [0002, 0005]

Claims (11)

Surgical needle, with an elongated body ( 12 ), whose distal end ( 18 ; 42 ; 62 ; 82 ; 102 ; 122 ) as a needle tip ( 20 ; 44 ; 64 ; 84 ; 104 ; 124 ; 144 ; 154 ; 167 ), wherein the body ( 12 ) at its distal end ( 18 ; 42 ; 62 ; 82 ; 102 ; 122 ) at least one eyelet formed as a groove ( 22 ; 50 . 52 ; 70 . 72 ; 90 . 92 ; 110 ; 130 . 132 ; 142 ; 152 ; 168 . 170 ) for a surgical thread ( 172 ) partially in the longitudinal direction of the body ( 12 ) and which at one end has an opening ( 26 ; 54 . 56 ; 76 ; 96 ; 112 ; 134 . 136 ) for introducing the thread ( 172 ) in the eyelet ( 22 ; 50 . 52 ; 72 ; 92 ; 110 ; 130 . 132 ; 142 ; 152 ; 168 ), characterized in that the at least one eyelet ( 22 ; 50 . 52 ; 72 ; 92 ; 110 ; 130 . 132 ; 142 ; 152 ; 168 ) at its tip ( 20 ; 44 ; 64 ; 84 ; 104 ; 124 ; 144 ; 154 ; 167 ) facing the end, and that the extension of the eyelet ( 22 ; 50 . 52 ; 72 ; 92 ; 110 ; 130 . 132 ; 142 ; 152 ; 168 ) is greater in the longitudinal direction than the extent of the opening ( 26 ; 54 . 56 ; 76 ; 96 ; 112 ; 134 . 136 ) longitudinal. Surgical needle according to claim 1, characterized in that the body ( 12 ) at its distal end ( 18 ; 42 ; 62 ; 82 ; 102 ; 122 ) a second formed as a groove eyelet ( 50 ; 70 ; 90 ; 130 ; 170 ) partially in the longitudinal direction of the body ( 12 ), and that the extent of the eyelet ( 50 ; 70 ; 90 ; 130 ; 170 ) is greater in the longitudinal direction than the extent of the opening ( 54 ; 74 ; 94 ; 134 ) longitudinal. Surgical needle according to claim 2, characterized in that the second eyelet ( 50 ; 130 ) at its tip ( 44 ; 124 ) facing the end is open. Surgical needle according to claim 2, characterized in that the second eyelet ( 70 ; 90 ; 170 ) at its tip ( 64 ; 84 ; 167 ) facing away from the end is open. Surgical needle according to claim 2 or 3, characterized in that the second eyelet ( 50 ; 130 ) with respect to the first eyelet ( 52 ; 132 ) is circumferentially offset. Surgical needle according to claim 2 or 4, characterized in that the second eyelet ( 70 ; 90 ; 170 ) with respect to the first eyelet ( 72 ; 92 ; 168 ) is located at the same circumferential location, and that the two oppositely extending eyelets ( 70 . 72 ; 90 . 92 ; 168 . 170 ) an eyelet pair ( 73 ; 93 ) form. Surgical needle according to claim 6, characterized in that the body ( 12 ) at its distal end ( 82 ) at least two eyelet pairs ( 93 . 95 ) which are circumferentially offset. Surgical needle according to claim 6 or 7, characterized in that the openings ( 74 . 76 ) of eyelets ( 70 . 72 ), which the eyelet pair ( 73 ) are separated from each other. Surgical needle according to claim 6 or 7, characterized in that the openings ( 94 . 96 ) of eyelets ( 90 . 92 ), which the eyelet pair ( 93 ) form a common opening. Surgical needle according to one of claims 1 to 9, characterized in that an end point ( 28 ; 46 ; 66 ; 86 ; 106 ; 126 ) of the needle tip ( 20 ; 44 ; 64 ; 84 ; 104 ; 124 ) on the central longitudinal axis ( 24 ; 48 ; 68 ; 88 ; 108 ; 128 ) of the needle ( 10 ; 40 ; 60 ; 80 ; 100 ; 120 ) lies. Surgical needle according to one of claims 1 to 10, characterized in that the end point ( 146 ; 156 ) of the needle tip ( 144 ; 154 ) relative to the central longitudinal axis ( 148 ; 158 ) of the needle ( 140 ; 150 ) is offset laterally.