Devices and systems for an illuminated surgical suture

Patent metadata

Field	Value
Publication number	US-10071180-B1
Application number	US-201414289352-A
Country	US
Kind code	B1
Filing date	May 28, 2014
Priority date	May 28, 2014
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

An apparatus may comprise an optical fiber that includes a core region having a core thickness and a cladding layer having a cladding layer thickness. The core region and the cladding layer may have material characteristics suitable for suturing biological tissue. The core thickness and the cladding layer thickness may be configured to cause at least a portion of light propagating in the core region to propagate out of the optical fiber through the cladding layer. The apparatus may also comprise a light source optically coupled to the optical fiber and configured to provide the light for propagation in the core region of the optical fiber. The apparatus may also comprise a suturing device coupled to the optical fiber and configured to guide the optical fiber for suturing the biological tissue.

First claim

What is claimed is:

1. An apparatus comprising:
an optical fiber having material characteristics suitable for suturing biological tissue,
wherein the optical fiber comprises a core region having a core thickness and a core index of refraction that allows light to propagate in the core region,
wherein the optical fiber comprises a cladding layer having a cladding layer thickness and at least a portion of the cladding layer having a cladding index of refraction different than the core index of refraction such that the optical fiber guides propagation of the light inside the core region,
wherein the optical fiber transmits, based on at least the core thickness and the cladding layer thickness, at least a first portion of the light propagating in the core region out of the optical fiber through the cladding layer to illuminate the optical fiber and the biological tissue,
wherein the optical fiber comprises a plurality of deformations in the cladding layer, the plurality of deformations corresponding to portions of the cladding layer that comprise a same index of refraction as the core index of refraction, and
wherein a second portion of the light propagates out of the cladding layer through the plurality of deformations;
a light source optically coupled to the optical fiber to provide the light for propagation in the core region of the optical fiber,
wherein the plurality of deformations are arranged such that a distance between adjacent deformations is based on a given distance from the adjacent deformations to the light source; and
a suturing device coupled to the optical fiber to guide the optical fiber for suturing the biological tissue.

2. The apparatus of claim 1 , wherein the plurality of deformations corresponds to removed portions of the cladding layer.

3. The apparatus of claim 1 , further comprising:
a tuning device coupled to the light source to adjust one or more of a wavelength or intensity of the light provided by the light source.

4. The apparatus of claim 3 , wherein the tuning device modulates the light provided by the light source to correspond to a given modulated light pattern.

5. The apparatus of claim 1 , further comprising:
at least one other optical fiber coupled to the optical fiber,
wherein modulated light from at least one other light source propagates out of a given cladding layer of the at least one other optical fiber, and
wherein the modulated light has a wavelength other than a corresponding wavelength of the light from the light source.

6. The apparatus of claim 1 , wherein the suturing device comprises a surgical needle, wherein the light source is disposed on the surgical needle.

7. The apparatus of claim 1 , wherein the light source is disposed in the optical fiber.

8. The apparatus of claim 1 , further comprising:
a vision device that detects the at least first portion of the light propagating out of the optical fiber.

9. The apparatus of claim 1 , further comprising:
a sensor for detecting oxygen; and
a power supply that powers the light source responsive to the sensor detecting oxygen.

10. The apparatus of claim 1 , wherein the core region and the cladding layer comprise absorbable materials.

11. The apparatus of claim 1 , wherein the core region and the cladding layer comprise non-absorbable materials.

12. A suture comprising:
a core polymer having a core thickness, wherein the core polymer has a core index of refraction to allow light to propagate in the core polymer;
a cladding polymer having a cladding thickness,
wherein the cladding polymer is coupled to an outer surface of the core polymer,
wherein at least a portion of the cladding polymer has a cladding index of refraction different than the core index of refraction such that a first portion of the light propagating in the core polymer is guided inside the core polymer,
wherein the core polymer and the cladding polymer have material characteristics suitable for suturing biological tissue, and
wherein the suture transmits, based on at least the core thickness and the cladding thickness, a second portion of the light propagating in the core polymer through the cladding polymer and out of the suture to illuminate the suture and the biological tissue; and
a plurality of deformations in the cladding polymer corresponding to portions of the cladding layer that comprise a same index of refraction as the core index of refraction, wherein the second portion of the light propagates out of the cladding polymer through the plurality of deformations,
wherein the plurality of deformations are variably spaced along the cladding polymer to enhance uniformity of light propagating out of the suture by gradually reducing a distance between adjacent deformations as a given distance increases from a given end of the suture.

13. The suture of claim 12 , wherein the plurality of deformations corresponds to removed portions of the cladding polymer.

14. The suture of claim 12 , further comprising:
a light source disposed in the suture to provide the light for propagation in the core polymer.

15. The suture of claim 14 , further comprising:
a sensor for detecting oxygen; and
a power supply that powers the light source responsive to the sensor detecting oxygen.

16. A suturing device comprising:
a surgical needle having an indentation to couple an optical fiber that has material characteristics suitable for suturing biological tissue,
wherein the optical fiber comprises a core region having a core thickness and a core index of refraction that allows light to propagate in the core region,
wherein the optical fiber comprises a cladding layer having a cladding layer thickness and at least a portion of the cladding layer having a cladding index of refraction different than the core index of refraction such that the optical fiber guides the light propagating inside the core region,
wherein the optical fiber transmits, based on at least the core thickness and the cladding layer thickness, at least a first portion of light propagating in the core region to propagate out of the optical fiber through the cladding layer to illuminate the suture and the biological tissue,
wherein the optical fiber comprises a plurality of deformations in the cladding layer, the plurality of deformations corresponding to portions of the cladding layer that comprise a same index of refraction as the core index of refraction, and
wherein a second portion of the light propagates out of the cladding layer through the plurality of deformations; and
a light source disposed on the surgical needle, wherein the light source is optically coupled to the optical fiber and provides the light for propagation in the core region of the optical fiber,
wherein the plurality of deformations are arranged such that a distance between adjacent deformations is based on a given distance from the adjacent deformations to the light source.

17. The suturing device of claim 16 , wherein the light source is disposed in the indentation.

18. The suturing device of claim 16 , wherein the light source is disposed adjacent to the indentation.

Assignees

• Verily Life Sciences Llc

Inventors

• Miao Xiaoyu
• Weibel Douglas
• Parviz Babak

Classifications

• A61B2090/0807

  Indication means · CPC title

• A61L17/00 Primary

  Materials for surgical sutures or for ligaturing blood vessels (surgical adhesives A61L24/00; surgical instruments, devices or methods for suturing or ligaturing A61B17/04, A61B17/12; supports or packages for suture materials A61B17/04); {Materials for prostheses or catheters (bone cements or surgical adhesives for soft body tissues A61L24/00; shape or structure of prostheses A61F2/00; shape or structure of catheters A61M5/00)} · CPC title

• A61B2017/00907

  for light · CPC title

• A61B17/06

  Needles {; Sutures; Needle-suture combinations}; Holders or packages for needles or suture materials · CPC title

• A61B2017/00526

  Methods of manufacturing · CPC title