Needle-suture combination, needle holder and surgical suture apparatus
A needle-suture combination includes a needle having a first needle end and a second needle end opposite to the first needle end, and a suture connected to the needle between the first needle end and the second needle end. Each of the first needle end and the second needle end includes a needle point and a locking groove to receive a locking element of a needle holder. The first needle end and the second needle end each include a needle end stop surface between the groove and the needle point, where the needle end stop surface is arranged to cooperate with a needle channel stop surface of a needle channel of a needle holder.
1. A needle holder to hold a needle-suture combination that comprises a needle having a first needle end and a second needle end opposite to the first needle end and a suture connected to the needle between the first needle end and the second needle end, wherein the first needle end and the second needle end each comprise a needle point, a locking groove and a needle end stop surface between the locking groove and the needle point, wherein the needle holder comprises:
a needle channel arranged to receive the first needle end or the second needle end, the needle channel comprising an inlet to introduce the respective needle end into the needle channel, and
a needle locking element to be received in the locking groove of the respective needle end to lock the respective needle end in the needle channel,
wherein the needle channel comprises a needle channel stop surface to cooperate with the needle end stop surface of the respective needle end of the needle-suture combination,
wherein the needle channel comprises a needle holding part having a first diameter and in which the needle channel stop surface is provided, and a tissue receipt channel part between the needle holding part and the inlet of the needle channel, the tissue receipt channel part having a second diameter in the range of 1.2 to 2.5 times the first diameter, and
wherein the needle channel comprises at the inlet an alignment funnel to align the needle end with the needle channel.
2. The needle holder of claim 1 , wherein the needle channel stop surface is substantially conical.
3. The needle holder of claim 1 , wherein the needle channel is configured to be free of contact of the needle point when the needle channel stop surface engages the needle end stop surface.
4. The needle holder of claim 1 , wherein the alignment funnel comprises a funnel surface at an acute funnel surface angle with respect to a longitudinal axis of the needle channel, wherein the acute funnel surface angle is substantially the same as or smaller than 40 degrees.
5. The needle holder of claim 1 , wherein a length of the tissue receipt channel part is from at least 1 times the second diameter to 1.5 times the second diameter.
6. The needle holder of claim 1 , wherein the second diameter is in the range of 1.3 to 1.8 times the first diameter.
7. A surgical suture apparatus for passing a double-ended surgical needle-suture combination forwards and backwards, wherein the surgical apparatus comprises:
a first jaw element, comprising a first needle holder configured as the needle holder of claim 1 to hold a first needle end of the needle,
a second jaw element comprising a second needle holder configured as the needle holder of claim 1 to hold a second needle end of the needle, and
an operating device to operate the first needle holder and the second needle holder to alternately hold the first needle end by the first needle holder and the second needle end by the second needle holder.
8. A needle holder to hold a needle-suture combination, wherein the needle holder comprises:
a needle channel arranged to receive a needle end of a needle of the needle-suture combination, the needle channel comprising:
an inlet to introduce the respective needle end into the needle channel,
a needle holding part having a first diameter, and
a tissue receipt channel part between the needle holding part and the inlet of the needle channel, the tissue receipt channel part having a second diameter in the range of 1.2 to 2.5 times the first diameter,
wherein the needle channel comprises at the inlet an alignment funnel to align the needle end with the needle channel.
9. The needle holder of claim 8 , wherein the alignment funnel comprises a funnel surface at an acute funnel surface angle with respect to a longitudinal axis of the needle channel, wherein the acute funnel surface angle is the same as or smaller than 40 degrees.
10. The needle holder of claim 8 , wherein the second diameter is in the range of 1.3 to 1.8 times the first diameter.
11. The needle holder of claim 10 , wherein the first diameter of the needle holding part is approximately 0.4 mm and the second diameter is approximately 0.6 mm.
12. A needle holder to hold a needle-suture combination, wherein the needle holder comprises:
a needle channel arranged to receive a needle end of a needle of the needle-suture combination, the needle channel comprising:
an inlet to introduce the respective needle end into the needle channel,
a needle holding part having a first diameter, and
a tissue receipt channel part between the needle holding part and the inlet of the needle channel, the tissue receipt channel part having a second diameter in the range of 1.2 to 2.5 times the first diameter, and
wherein a length of the tissue receipt channel part is at least 1 times the second diameter.