Guide instrument for a medical needle with thread

• US 5,824,009 A
• Filed: 12/06/1995
• Issued: 10/20/1998
• Est. Priority Date: 12/06/1995
• Status: Expired due to Term

• Current Assignee: Kabushiki Kaisha Matsutani Seisakusho
• Original Assignee: Kabushiki Kaisha Matsutani Seisakusho
• Inventors: Ohtsuka, Tadashi, Isaki, Haruo, Fukuda, Masatoshi, Matsutani, Kanji
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): PHAM, THUY D
• Application Number:
  US08/568,346
• Time in Patent Office: 1,049 Days
• Field of Search: 606/144, 606/145, 606/147, 606/148, 606/139, 606/205
• US Class Current: 606/144
• CPC Class Codes: A61B 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 2017/2926 Details of heads or jaws

Abstract

A guide instrument for passing a medical needle with thread through or between body tissues has first and second shafts mounted to be pivotally movable to each other and is formed with, on the first shaft, a needle stand for making the needle with thread stand up and holding the needle with thread, a hole for guiding the thread, and a slit and with, on the second shaft, a needle receiver for receiving the needle when the shafts are made close while the needle with thread stands up at the needle stand. When the shafts 1, 2 are made close while the needle with thread stands up at the needle stand, the needle with thread passes through and between the body tissues and is engaged with the needle receiver. When the shafts are made open, the needle with thread while keeping the engagement with the needle receiver separates from the needle stand, and therefore, the needle with thread can be guided from the first shaft to the second shaft. Where a container for containing the needle with thread is formed in continuation with the needle stand on the parting faces of the first and second shafts, the container can prevent the needle with thread from dropping out, as well as can prevent the body tissues from being damaged by the needle, before the needle reaches an affected area at a time of ligation or suture.

Claims

1. A guide instrument for a medical needle with thread in which the medical needle with thread, which includes a needle body and a thread secured to a proximal end of the needle body extending in an elongated direction of the needle body is made to pass through or between body tissues and in which the medical needle that has passed therethrough is received, the guide instrument comprising:

a pair of shafts pivotally mounted to each other having a handle on the shafts for manipulation;

a needle stand formed on a distal end of one of the shafts for rendering the needle body stand up by contacting, the needle stand is constituted of a recess in contact with either both of the surfaces of the proximal end of the needle body and a part of the outer circumferential surface located on the proximal side of the needle body or the surface of the proximal end of the needle body, the needle stand having a flat surface to be in contact with the surface of the proximal end of the needle body;

a thread guide formed on the distal end of one of the shafts for guiding the thread in communication with the needle stand; and

a needle receiver formed on a distal end of the other of the shafts for receiving the needle body that stands, the needle receiver constituted of a long hole or slit having width substantially equal to or slightly less than the diameter of the needle body and extending toward a distal end and/or a proximal end of the shaft from a position on the other shaft corresponding to the needle stand formed on the one shaft,

whereby while the distal ends of shafts are made close, the needle body standing upon one of the shafts is rushed to pass through or between body tissues and to be engaged with the needle receiver formed at the other of the shafts, and while the distal ends of the shafts are made open, the needle body maintains the engagement with the needle receiver to be separated from the needle stand;

wherein the needle receiver formed on the distal end of the other shaft is constituted of a long hole having width substantially equal to or slightly less than the diameter of the needle body and extending toward a distal end and/or a proximal end of the shaft from a position on the other shaft corresponding to the needle stand formed on the one shaft;

wherein the needle receiver constituted of the long hole has holding force of the needle body less than tensional intensity of the thread secured to the needle body or securing force of the needle body to the thread.

2. A guide instrument for a medical needle with thread in which the medical needle with thread, which includes a needle body and a thread secured to a proximal end of the needle body extending in an elongated direction of the needle body, is made to pass through or between body tissues, and in which the medical needle that has passed therethrough is received, the guide instrument comprising:

a pair of shafts pivotally mounted to each other having a handle on the shafts for manipulation;

a needle stand formed on a distal end of one of the shafts for rendering the needle body stand up by contacting, the needle stand is constituted of a recess in contact with either both of the surfaces of the proximal end of the needle body and a part of the outer circumferential surface located on the proximal side of the needle body or the surface of the proximal end of the needle body, the needle stand having a flat surface to be in contact with the surface of the proximal end of the needle body;

a thread guide formed on the distal end of one of the shafts for guiding the thread in communication with the needle stand; and

a needle receiver formed on a distal end of the other of the shafts for receiving the needle body that stands the needle receiver constituted of a lone hole or slit having width substantially equal to or slightly less than the diameter of the needle body and extending toward a distal end and/or a proximal end of the shaft from a position on the other shaft corresponding to the needle stand formed on the one shaft,

whereby while the distal ends of shafts are made close, the needle body standing up on one of the shafts is pushed to pass through or between body tissues and to be engaged with the needle receiver formed at the other of the shafts, and while the distal ends of the shafts are made open, the needle body maintains the engagement with the needle receiver to be separated from the needle stand;

wherein the one shaft is formed with a tension applying member for applying tension to the thread guided along the one shaft.

3. A guide instrument for a medical needle with thread in which the medical needle with thread, which includes a needle body and a thread secured to a proximal end of the needle body extending in an elongated direction of the needle body, is made to pass through or between body tissues and in which the medical needle that has passed therethrough is received, the guide instrument comprising:

a pair of shafts pivotally mounted to each other having a handle on proximal ends of the shafts for manipulation;

a needle stand formed on a distal end of one of the shafts for rendering the needle body stand up by contacting either or both of a proximal end of the needle body and a part of the circumferential surface located on a proximal side of the needle body;

a thread guide formed on the distal end of one of the shafts for guiding the thread in communication with the needle stand;

a needle receiver formed on a distal end of the other of the shafts for receiving the needle body that stands;

a horizontal needle container lying in the same plane as the pair of shafts for holding the needle body lying down formed continuously to either or both of the needle stand or the needle receiver,

whereby while the distal ends of shafts are made open or after distal ends of shafts are made open, the needle body lying down on the needle container is made stand up, and while the distal ends of shafts are made close, the needle body standing up on one of the shaft is pushed to pass through or between body tissues and to be engaged with the needle receiver formed at the other of the shafts, and while the distal ends of the shafts are made open, they are separated from the needle stand.

4. The guide instrument according to claim 3, wherein the needle stand formed on the distal end of the one shaft is constituted of a flat surface to be in contact with the surface of the proximal end of the needle body.

5. The guide instrument according to claim 3, wherein the thread guided formed on the distal end of the one shaft is constituted so that a corner of the thread guide located at a passage of the thread does not damage the thread.

6. The guide instrument according to claim 3, wherein the needle stand formed on the distal end of the one shaft is constituted of a recess in contact with either or both of the surface of the proximal end of the needle body and a part of the outer circumferential surface located on the proximal side of the needle body.

7. The guide instrument according to claim 3, wherein the needle receiver formed on the distal end of the other shaft is constituted of a long hole having width substantially equal to or slightly less than the diameter of the needle body and extending toward a distal end and/or a proximal end of the shaft from a position on the other shaft corresponding to the needle stand formed on the one shaft.

8. The guide instrument according to claim 7, wherein the needle receiver constituted of the long hole formed on the other shaft is formed with a slit extending toward the distal end and/or the proximal end of the shaft from a long hole.

9. The guide instrument according to claim 7, wherein the needle receiver constituted of the long hole has holding force of the needle body less than tensional intensity of the thread secured to the needle body or securing force of the needle body to the thread.

10. The guide instrument according to claim 3, wherein the one shaft is formed with a guide for guiding along the one shaft the thread secured to the needle body.

11. The guide instrument according to claim 3, wherein the one shaft is formed with a holding member for holding the thread guided along the one shaft and secured to the needle body.

12. The guide instrument according to claim 3, wherein the one shaft is formed with a tension applying member for applying tension to the thread guided along the one shaft.

13. The guide instrument according to claim 3, wherein the one shaft is formed with a projection for wrapping the thread guided along the one shaft.

14. The guide instrument according to claim 3, wherein the needle body of the medical needle with thread is a straight needle having length equal to or greater than 3 millimeters and less than 15 millimeters.

15. The guide instrument according to claim 3, wherein the needle body of the medical needle with thread has diameter twice or more of the diameter of the thread.