Blunt tip surgical needle

• US 5,693,072 A
• Filed: 05/23/1995
• Issued: 12/02/1997
• Est. Priority Date: 11/07/1990
• Status: Expired due to Term

• Current Assignee: Charles L. Mcintosh
• Original Assignee: Charles L. Mcintosh
• Inventors: McIntosh, Charles L.
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): SHAI, DAPHNA
• Application Number:
  US08/448,045
• Time in Patent Office: 924 Days
• Field of Search: 606/222-224, D 3/28
• US Class Current: 606/223
• CPC Class Codes: A61B 17/0493 Protective devices for suturing, i.e. for protecting the patient's organs or the operator
• CPC Class Codes: A61B 17/06066 Needles, e.g. needle tip configurations making needles B21G1/00
• CPC Class Codes: A61B 2017/06085 having a blunt tip blunt dissectors A61B2017/320044
• CPC Class Codes: A61B 2090/0801 Prevention of accidental cutting or pricking

Abstract

A surgical needle for use in suturing non-cutaneous soft tissues of the body. The surgical needle includes a needle shaft and a needle tip formed of a rigid material suitable for use inside the body. The needle tip has a body portion integrally formed with and extending from the needle shaft and is tapered along its length. The needle tip is further provided with a blunt head which together with the body portion defines a continuously smooth outer surface lacking any sharp cutting edges. The blunt head is adapted to penetrate muscle and fascia, muscle alone, adipose, pericostal tissue and other non-cutaneous soft tissues or the body while at the same time preventing skin penetration of the gloved hand of an operator.

Claims

1. A surgical suture needle for use in directly piercing non-cutaneous soft tissues of the body, comprising:

a needle shaft; and

a needle tip, said needle shaft and needle tip having a solid interior lacking any lumen communicating with the exterior of said needle and formed of a rigid material suitable for use inside the body, said needle tip having a body portion integrally formed with and extending from said needle shaft, said body portion being tapered along the length thereof, said needle tip further having a blunt head adapted to penetrate muscle and fascia, muscle alone, adipose, pericostal tissue and other non-cutaneous soft tissues of the body while preventing skin penetration of the gloved hand of an operator and wherein said needle has a continuously smooth outer surface lacking any sharp cutting edges.

2. The surgical needle of claim 1 wherein said blunt head has a part spherical shape and a vertex which forms a portion of said part spherical shape.

3. The surgical needle of claim 2 wherein said blunt head has a diameter of curvature which is at least 25% of the diameter of said needle shaft and said diameter of curvature is at least about 0.006".

4. The surgical needle of claim 3 wherein said blunt head having a diameter of curvature in the range of 25% to 62% of the diameter of said needle shaft.

5. The surgical needle of claim 3 wherein said diameter of curvature of said needle tip is no greater than about 0.031".

6. The surgical needle of claim 1 wherein said needle shaft has a generally flat pressed circular cross-section in order to facilitate stability in a needle holder.

7. The surgical needle of claim 1 wherein said needle tip has a generally circular cross-section.

8. The surgical needle of claim 1 wherein the diameter of said needle shaft is in a range of about 0.026" to 0.050".

9. A surgical suture needle for use in directly piercing muscle and fascia, muscle alone, adipose, pericostal tissue and other non-cutaneous soft tissues of the body, comprising:

a needle shaft portion having a generally circular cross-section; and

a needle tip portion having a generally circular cross-section, said needle tip portion further having a body segment and a blunt head, said body segment being tapered along the length thereof, said blunt head having a part spherical shape and a vertex which forms a portion of said part spherical shape, said blunt head having a diameter of curvature which is at least 25% of the diameter of said needle shaft to thereby prevent skin penetration of the gloved hand of an operator, and wherein said needle tip portion and needle shaft portion have a solid interior lacking any lumen communicating with the exterior of said needle.

10. The surgical needle of claim 9 wherein said diameter of curvature is in a range of 25% to 62% of the diameter of said needle shaft.

11. The surgical needle of claim 10 wherein the diameter of said needle shaft is in a range of about 0.026" to 0.050".

12. The surgical needle of claim 10 wherein said diameter of curvature of said needle tip is in a range between about 0.006" to about 0.031".

13. A taper point surgical suture needle for use in directly piercing non-cutaneous soft tissues of the body, comprising:

a needle shaft; and

a means, located at the tip of said needle and extending integrally from said needle shaft, for penetrating muscle and fascia, muscle alone, adipose, pericostal tissue and other non-cutaneous soft tissues of the body while preventing skin penetration of the gloved hand of an operator, said needle shaft and tip means being formed of a rigid material suitable for use inside the body, said tip means having a tapered body portion integrally formed with and extending from said needle shaft, said tip means further including a blunt head integrally formed with and extending from said body portion, said tip means having a continuously smooth outer surface lacking any sharp cutting edges, and said tip means and needle shaft have a solid interior lacking any lumen communicating with the exterior of said needle.

14. The surgical needle of claim 13 wherein said blunt head has a part spherical shape and a vertex which forms a portion of said part spherical shape, said blunt head having a diameter of curvature which in a range from about 50% to 62% of the diameter of said needle shaft.

15. A surgical suture needle for use in directly piercing non-cutaneous soft tissues of the body, comprising:

a needle shaft; and

a needle tip, said needle shaft and needle tip formed of a rigid material suitable for use inside the body, said needle tip having a body portion integrally formed with and extending from said needle shaft, said body portion being tapered along the length thereof, said needle tip further having a blunt head adapted to penetrate muscle and fascia, muscle alone, adipose, pericostal tissue and other non-cutaneous soft tissues of the body while preventing skin penetration of the gloved hand of an operator, said blunt head having a part spherical shape and a vertex which forms a portion of said part spherical shape, said blunt head being formed so as to provide a safety factor of at least 200% over a needle having 0% bluntness, and wherein said needle tip and needle shaft have a solid interior lacking any lumen communicating with the exterior of said needle.

16. The surgical needle of claim 15 wherein said blunt head is formed so as to provide a safety factor of between about 200% to 800% over a needle having 0% bluntness.