US 11,432,810 B2Granted

Systems and methods for surgical retraction

AssigneeInnovasis, Inc.

InventorsColin Gregersen, Navid Mahpeykar, Jason Glad

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Abstract

A retractor system may provide access to a surgical site along an access pathway surrounded by tissue. In some embodiments, the retractor system may include three arms and four retractor blades, each having a tissue engagement surface. The second arm may translate along a first retraction direction relative to the first arm. The first retractor blade may be securable to the first arm and the second retractor blade may be securable to the second arm. The third arm may have a connection feature that may be removably securable to a connection interface of the second arm. The third retractor blade may be securable to the third arm and the fourth retractor blade may be securable to a rack between the first and second arms. The third and fourth retractor blades may have cross-sectional shapes oriented generally parallel to the first retraction direction.

Claims22

Dependent claims

A retractor system configured to provide access to a surgical site along an access pathway surrounded by tissue, the retractor system comprising:

a first arm;
a second arm connectable to the first arm via a rack such that the first arm is translatable along the rack in a first retraction direction relative to the second arm, the second arm comprising a connection interface;
a first retractor blade securable to the first arm such that the first retractor blade extends into the access pathway, the first retractor blade comprising a first tissue engagement surface that engages the tissue;
a second retractor blade securable to the second arm such that the second retractor blade extends into the access pathway, the second retractor blade comprising a second tissue engagement surface that engages the tissue;
a third arm comprising a connection feature removably securable to the connection interface of the second arm to removably secure the third arm to an intermediate portion of the second arm;
and
a third retractor blade securable to the third arm such that the third retractor blade extends into the access pathway to engage the tissue, the third retractor blade comprising a third tissue engagement surface that engages the tissue, the third retractor blade comprising a third cross-sectional shape oriented generally parallel to the first retraction direction;
wherein:
the connection interface comprises a first recess and a second recess formed in the intermediate portion of the second arm;
and
the connection feature comprises an actuator arm and a lower arm, wherein the actuator arm is receivable within the first recess and the lower arm is receivable within the second recess to removably secure the third arm to the intermediate portion of the second arm.

8 more elements

A retractor system configured to provide access to a surgical site along an access pathway surrounded by tissue, the retractor system comprising:

a first arm;
a second arm connectable to the first arm via a rack such that the first arm is translatable along the rack in a first retraction direction relative to the second arm, the second arm comprising a connection interface;
a first retractor blade securable to the first arm such that the first retractor blade extends into the access pathway, the first retractor blade comprising a first tissue engagement surface that engages the tissue;
a second retractor blade securable to the second arm such that the second retractor blade extends into the access pathway, the second retractor blade comprising a second tissue engagement surface that engages the tissue;
a third arm comprising a connection feature removably securable to the connection interface;
and
a third retractor blade securable to the third arm such that the third retractor blade extends into the access pathway to engage the tissue, the third retractor blade comprising a third tissue engagement surface that engages the tissue, the third retractor blade comprising a third cross-sectional shape oriented generally parallel to the first retraction direction, wherein the first arm is slidably coupled to the rack to provide translation of the first arm relative to the second arm along the rack in the first retraction direction;
and
a fourth retractor blade securable to the rack such that the fourth retractor blade extends into the access pathway to engage the tissue, the fourth retractor blade comprising a fourth tissue engagement surface that engages the tissue, the fourth retractor blade comprising a fourth cross-sectional shape oriented generally parallel to the first retraction direction;
wherein:
the first arm comprises a first blade interface;
the first retractor blade comprises a first arm interface securable to the first blade interface;
the first arm interface is engageable with the first blade interface by moving the first arm interface, relative to the first blade interface, along an insertion direction generally parallel to the access pathway and toward the surgical site;
and
with the first retractor blade secured to the first arm, the second retractor blade secured to the second arm, the third retractor blade secured to the third arm, and the fourth retractor blade secured to the rack:
the second retractor blade is generally parallel to the first retractor blade;
and
the fourth retractor blade is generally parallel to the third retractor blade and perpendicular to the first and second retractor blades.

15 more elements

A retractor system configured to provide access to a surgical site along an access pathway surrounded by tissue, the retractor system comprising:

a first arm;
a second arm connectable to the first arm via a rack such that the first arm is translatable along the rack in a first retraction direction relative to the second arm, the second arm comprising a connection interface;
a first retractor blade securable to the first arm such that the first retractor blade extends into the access pathway, the first retractor blade comprising a first tissue engagement surface that engages the tissue;
a second retractor blade securable to the second arm such that the second retractor blade extends into the access pathway, the second retractor blade comprising a second tissue engagement surface that engages the tissue;
a third arm comprising a connection feature removably securable to the connection interface of the second arm to removably secure the third arm to an intermediate portion of the second arm;
and
a third retractor blade securable to the third arm such that the third retractor blade extends into the access pathway to engage the tissue, the third retractor blade comprising a third tissue engagement surface that engages the tissue, the third retractor blade comprising a third cross-sectional shape oriented generally parallel to the first retraction direction;
and
a guide dilator insertable into the access pathway to engage the tissue, the guide dilator comprising a first side shaped to be coupled to the first retractor blade and a second side shaped to be coupled to the second retractor blade to guide insertion of the first retractor blade and the second retractor blade into the access pathway;
wherein:
the first side comprises a first slot shaped to receive the first retractor blade;
the second side comprises a second slot shaped to receive the second retractor blade;
each of the first retractor blade and the second retractor blade comprises a groove;
and
the retractor system further comprises:
a guide wire receivable in the grooves of the first retractor blade and the second retractor blade, the guide wire comprising a distal end insertable into the surgical site along the access pathway;
a first pin receivable in the grooves of the first retractor blade and the second retractor blade, the first pin comprising a first distal end anchorable in a first bone proximate the surgical site;
and
a second pin receivable in the grooves of the first retractor blade and the second retractor blade, the second pin comprising a second distal end anchorable in a second bone proximate the surgical site.

16 more elements

A retractor system configured to provide access to a surgical site along an access pathway surrounded by tissue, the retractor system comprising:

a first arm;
a second arm connectable to the first arm via a rack such that the first arm is translatable along the rack in a first retraction direction relative to the second arm, the second arm comprising a connection interface;
a first retractor blade securable to the first arm such that the first retractor blade extends into the access pathway, the first retractor blade comprising a first tissue engagement surface that engages the tissue;
a second retractor blade securable to the second arm such that the second retractor blade extends into the access pathway, the second retractor blade comprising a second tissue engagement surface that engages the tissue;
a third arm comprising a connection feature removably securable to the connection interface of the second arm to removably secure the third arm to an intermediate portion of the second arm;
and
a third retractor blade securable to the third arm such that the third retractor blade extends into the access pathway to engage the tissue, the third retractor blade comprising a third tissue engagement surface that engages the tissue, the third retractor blade comprising a third cross-sectional shape oriented generally parallel to the first retraction direction;
wherein:
the first arm is slidably coupled to the rack to provide translation of the first arm relative to the second arm along the rack in the first retraction direction;
and
the retractor system further comprises a fourth retractor blade securable to the rack such that the fourth retractor blade extends into the access pathway to engage the tissue, the fourth retractor blade comprising a fourth tissue engagement surface that engages the tissue, the fourth retractor blade comprising a fourth cross-sectional shape oriented generally parallel to the first retraction direction;
with the first retractor blade secured to the first arm, the second retractor blade secured to the second arm, the third retractor blade secured to the third arm, and the fourth retractor blade secured to the rack:
the second retractor blade is generally parallel to the first retractor blade;
and
the fourth retractor blade is generally parallel to the third retractor blade and perpendicular to the first and second retractor blades.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/930,007Filed 12 May 2020
Published: US 2021/0353277 A118 Nov 2021
Granted: 6 Sep 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

A61B 17/0206
For holding wounds open, e.g. retractors; Tractors: with antagonistic arms as supports for retractor elements
A61B 17/7077
For driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation: for moving bone anchors attached to…
A61B 90/30
Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00,…
A61B 2017/0046
Surgical instruments, devices or methods: with a releasable handle; with handle and operating part separable

Family

US 2021/0353277 A1Pre-grant publication · published 18 Nov 2021
US 11,432,810 B2This patent

From the US filing history. Foreign family members aren’t listed.

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